Do We Trust in Ourselves, God, or both?

The readings for the 22nd Sunday of Pentecost are: Genesis 4:1-15, 2 Timothy 4:6-8, 19-18; and Luke 18:9-17. As we look at these scriptural stories we ask a simple question: Should we trust in ourselves, in God or both? Seems like a simple question but in real life it is very complicated. Obviously, the practical person says that we should trust in ourselves because that is the only person we can depend upon. But can we always depend upon ourselves? Do we not become afraid, dependent, despondent and even despairing? Then what? Or the spiritual person may say that we should always trust in God. They say, "Have faith" and God will provide. But is this true? Does God indicated in the scripture that all we need to do is have faith and all will work out to our benefit. Seems lazy to me! So the answer must be that we are to trust in God and in ourselves. But to what extent? What portion of our lives is lived in faith and what in practice?