Did it ever occur to you that this is exactly the way the devil wants you to act? He doesn't want you to give your life to Jesus and will do everything he can to keep you from it.
And one of his most effective tricks is to make us look at ourselves rather than at Christ. As long as you focus on yourself, you will always believe you're too weak, and doubt if you are strong enough to be a Christian. You also will manage to think up all sorts of "reasons" why it doesn't make sense for you to give your life to Christ.
Don't focus on yourself; focus instead on Jesus Christ and what He did for you. Do you want to know if God loves you? Look at Christ as He hung on the cross and shed His blood for you. Do you want to know if there is life beyond the grave? Look at Christ after His resurrection from the dead. He alone could say, "I am the way and the truth and the life. No one comes to the Father except through me" (John 14:6). Why doubt any longer?
And I urge you not to delay. Don't be like the official to whom the Apostle Paul spoke, who said, "That's enough for now! You may leave. When I find it convenient, I will send for you" (Acts 24:25). But he never did. By a simple prayer of faith ask Christ to come into your life right now–and He will.