What would you suggest?

A good friend of mine is doing some youthwork training, and he asked people what they would say to people who were doing the training. What is there about youthwork you would say to people in training, that may be different to their training. You weren't allowed to e to cinical, so what would you say. If you were talking to anyone who was in training for being a youthworker, what would you say about youthwork?