Matthew 5:39: "But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also." This is totally unnatural for me. If somebody hurts me I'm inclined to hurt them back, and I want it to come back with interest. I'm good at it, which I'm not proud of. I'm also inclined to displace that anger. Even worse.
1 Thessalonians 5:18: "In every thing give thanks: for this is the will of God in Christ Jesus concerning you." Does that one really need explanation? There's plenty of things we probably don't think or want to be thankful for.