Choose your battles wisely means decide what is most important to you and forget the rest. You see this mostly with parents who engage in power struggles with their kids and "NO" them to death. I focus on things like hygeine, and safety with my toddlers however the grandparents hit them with a barage of no's and it loses its affect. NO don't touch the glass window, NO don't run in the house, NO don't eat anywhere but the kitchen, NO don't take your shoes off, NO don't stand on the couch, NO don't throw the balll in the house all in the matter of 10 minutes, I would not NO any of the above. I focus on NO don't hit your brother, NO don't touch the hot stove and things like that.