I don't think you're crazy at all. There is a spritual battle going on around us all the time. I believe that we must say NO to ungodliness, and God will give you the strength to overcome these temptations. Rely on God and His love and power, and not on yourself, because the flesh is weak. God loves you and forgives you and wants you to have victory over these things that we can ALL get ourselves entangled in. When you feel these thoughts come on, pray to God, when you feel weak, read His word. His word is powerful. Find a group of people that you can see the love of God in, it helps a lot to have that support, they will help you with your walk with God and your weaknesses. I hope this helps a little, you may believe differently, and thats ok, I just wanted to give you my point of view.