Most of the promises that people claim are promises made to Israel and not the church. I trust God to be with me no matter what happens. I trust that God will provide for me. I trust that God won't let me be tempted beyond my ability to resist. I was widowed when I was 33. We lost two children that were stillborn. I have no illusions that life will be easy just because I became a Christian.
And it's worth saying that we don't have to "claim" the promises of God or treat God like He won't keep his word. God is not a man who forgets or fails to keep his word.