I understand what you mean and I hope I can shade some light on your situation. The funny thing about us humans, when praying to GOD is that we expect Him to answer our prays in the manner that we want him to. I am sure that after you pray God opens a door for you to get out. That is if you are "honestly praying" for a way out. If you are expecting for God to come down from heaven and tell you NO, then we are out of line. That is taking one of the greatest gifts he gave us for granted, our free will!!! When you pray for strenght during that tough temped moment do the first thing that comes to mind after you say Amen. For me it is picking up my Bible or going to watch T.V. If you sit and dewell on your temptation then I promise you will fall because you are fighting a war on two fronts. One againist your flesh... that one can be tough because your flesh's desires are strong and will push us to the edge just so it is satisfied. It has know care for you not wanting to. The second battle is the spiritual one. The forces of satan that are trying to bring you down and make you do the deed you don't want to do. I am pretty sure you can relate to the cartoons - the devil on one shoulder- and the angel on the other.
So when you pray for strenght- get up and thank God that he heard you and gave you the strenght to come to Him in pray before you sinned again. Be thankful in all situations.
Lastly the sucky feeling you feel after your deed is the conviction of the Holy Spirit rebuking you for not using the strenght that you prayed for.
I hope this helps, and keep fighting the good fight. You and I (we all) fall short of the glory of God. So lets be thankful that he is so forgiving.
