I would tell them to treat themselves lovingly, most especially when something difficult happens.. as we're not perfect all the time and can be quite hard on ourselves if we gain a pound, don't lose a pound, miss a workout, have food that's unhealthy or counterproductive, etc... I would tell them to be kind to themselves and treat all experiences as a useful part of a learning process that they can learn from because they deserve to feel good about themselves and love themselves.
good luck!
