I Have Betrayed God

Good day aunty, I have been a fan of yours though I only read without dropping a comment, forgive me. I really appreciate the good work you have been doing. Thank you so much. Aunty I really need your help and that of every one reading this. 
Am a boy of 24 years, somehow am still young but time is never on anyone's side. I have a very big problem with both sex and masturbation. It has really gotten to me. I am a devoted christian, I don't joke with anything church. My absence in a service is always missed yet I find it difficult to quit. 
Just recently, my church started a fasting and prayer programme to last for 70 days. But before it commenced, I promised myself and God that through out the fasting I would stay away from these things. 
Aunty, as I am writing right now, 25 days has passed and I have had sex once and masturbated nine times. Now in my quest for penance and sacrifice to appease God, I break my fast by 5pm instead of the normal 2pm. 
But I still feel bitter about myself and I think that I have betrayed God that sometimes I feel like quitting the fasting. I don't know how to stop this mess. 
I have planned to cut myself off media phone and internet so as to stop going through porn site and downloading its content, am beginning to think that its something spiritual, but I don't really believe in spirits, I believe that whatsoever a man is going through is due to how he planned himself. 
I don't know what to believe now. There are times when I use to drink and when I take what that does not belong to me, but I worked on them and conquered them, In fact I cannot take what that does not belong to me no matter how much is it. 
So if I can stop stealing and drinking, why is stopping sex and masturbation too difficult for me, or is it my FATE?  I am really confused. 
I have a girlfriend, but she doesn't know that I masturbate and whenever we are together we always feel like having sex and in most cases we do it. The masturbation is the worst, I have been in it for nearly ten years now. 
Please, am taking much time to tell you all these to help you understand what is really going on with me. I want a brighter future so I want to further my education by next year and I don't want these sins to be an obstacle neither do I want them to affect my health. Please aunty help me.
Sorry for the long writing just that the problems are too long. Thank you. And may God continue to bless you. 

Put on the whole armor of God, that you may be able to stand against the schemes of the devil. For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places. Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand firm. Stand therefore, having fastened on the belt of truth, and having put on the breastplate of righteousness, and, as shoes for your feet, having put on the readiness given by the gospel of peace. In all circumstances take up the shield of faith, with which you can extinguish all the flaming darts of the evil one; and take the helmet of salvation, and the sword of the Spirit, which is the word of God, praying at all times in the Spirit, with all prayer and supplication. To that end keep alert with all perseverance, making supplication for all the saints,
Ephesians 6:11-18 ESV
Let us pray, Our heavenly father, I bless you for the life of your precious and priceless son. Thank you for your love, kindness and compassion which you have showered in his life. 
I am convinced that you have great plans and purpose for his life which was why you have laid this burden in his heart and have directed his footsteps. 
Lord please restore all that he has lost and grant him victory over the evil schemes of the enemy in Jesus name Amen. 
Beloved, I must first commend you for your sincerity and sincerity. I perfectly saw your struggles and weaknesses through your mail and I must admit that you are fighting a hard battle. 
My greatest joy is that God has won the victory forfor your sake. 
All that you need to do is surrender your efforts and hardworking to his grace and walk in obedience to his word and none of these will be a struggle for you anymore. 
Any battle that we fight over sin is never a physical battle and we can never win the battle with our efforts,instead they are spiritual, striving to kill, destroy and steal life out of us. 
The devil plotsplots to render you useless using the same thing that God created for your pleasure which is why you find it difficult to overcome most of the addictions you experience. 
I will be as honest and sincere as possible. Let's consider pornography, this is enticing you to practice those acts when you are not yet married to any lady thereby arousing your sexual libido, charging you up for sex and leaving you most times with no solution but for you to masturbate. 
Being that this was excited as a result of pornography, you end up depressed and angry at yourself without understanding why you are burning in the flames of your passion with no peace of mind. 
Whenever your mind is idle, the devil gives you the subtle advice and the next available data in your device becomes a tool for downloading pornographic movies so that you may view naked and possessed individuals having sex and doing all manner of things and you end up visualising the scene and next you find yourself masturbating and depressed. 
Do you agree with me that this is a hopeless cycle? Have God said that you wouldn't have sex in life? God never said so but this is the impression the devil gives to many which lure them to pornographic videos and next will be masturbation and fornication. 
What have you benefitted from this? You waste your energy, burn your limited funds and waste your destiny watching those who are dead but alive in the body. 
This was why God has laid this in your heart and desire to redeem you from destruction. 
We will apply the simple method to help you overcome these addictions. 
God loves you.. Always remember that no matter how you may feel now or what you may be experiencing today. 
God's intentions are to give you the very best in life and to help you find fulfilment in all your endeavours. 
God's commandments are to guide your footsteps and help you overcome the plots and the schemes of the wicked and they are sincerely for your own good. 
If God said that pornography, masturbation and fornication is a sin before him, can you see through his love for you and appreciate his sacrifice for your soul by avoiding it? Do we have a deal? 
If it truly breaks his heart seeing you suffer from depression and struggle with masturbation, please can you surrender your heart to him and allow him to build his home in your heart? 
Whenever you find yourself idle, can you please open the word of God and meditate on it even if it be one verse? 
What about reading motivating articles, watching edifying videos and listening to sincere teaching and exposition of God's word? 
The devil feeds on the content of your heart which is why your greatest weapon to overcoming the devil is by the transformation of your mind totally and completely by the word of God. 
Because your warfare is not what you can fight with your efforts, you need to pray sincerely and genuinely from your heart. This is not you trying to impress the members of your church or any of your friends, this is you seeking the face of God with all humility and sincerity of heart. 
Let him inside your heart and let him know the things that weakens your body. 
Please keep yourself away from anything that will lead you to practice the same things that break you down and let your craving be to please God. 
Proclaim the victory of Christ Jesus over your struggles by faith and continue to meditate on God's word. 
Please do keep me updated with your journey to overcoming your addictions. 
You need to be accountable to someone who understands what you are experiencing and will be there to support you in your journey. 
I believe that God will perfect that which I was unable to share with you and give you the grace and understanding to overcome these trying moments of your life and perfect the very desires of your heart.