Spiritual Warfare

Again, I have fallen. I have fallen to the same lustful sin. I feel empty. I feel lost. I am so weak and worthless. I have been praying in the Agpeya, fasting, reading the Bible, and I even partook of Holy Communion the same day I fell again. I struggled against this sin for a short while, and I prayed to God to help me, but in the end, I failed again. My desire for doing this sin has become a bad habit. I really want to stop! Really, I do! But whenever I am tempted, I fall. I tried really hard to get rid of these bad thoughts (I exercised, I prayed, I sang hymns), but they just kept coming back to me over and over again, until the temptation became a desire and I allowed myself to fall again. I don't have Christ in me. The devil is too strong for me, and I feel that the Lord is not helping me. I am ashamed and depressed. I don't feel worthy and I'm too shameful to stand up and pray to God anymore. I'm embarrassed to confess because I've confessed about this so many times before, and I feel too dirty and unworthy to partake of the Holy Communion anymore. I feel that I have gone too far in my path of sin, and that I will never fully get rid of this sin. I know that these are all tricks from the devil, but it is just how I feel. How can I return to God when I want to be cleansed and renewed, but still have these sinful desires in me? I want to get up and fight again, but I am so worried that I will fall again. I feel so empty. I am lost. I am scared. I don't value my life anymore! I hate myself because of my sins! I am nothing. I am not even worthy to live. I turn to you because God loves you and He is with you. Please have pity on me. I know I am weak. Please pray for me. What should I do? Am I going to perish? Has the Lord left me?