In life, unfortunately, there are always many difficult situations. Life is too short to waste your feelings, emotions, energy on additional unnecessary problems that we sometimes create ourselves. We, indeed, often can think of certain events to make sure that we have acted correctly. I think we should try to enjoy life. Even the smallest joys of life make our life more comfortable - your example with your daughter. You were happy, only because she wanted to hold your hand. These are very good and pleasant emotions:))