Every food truck business has both good and bad. As a boss, is it your job to accentuate the positive or eliminate the negative? You should try to do both, but studies have shown that negative information, experiences, and people have a far deeper impact than positive ones. It is a better use of your time and energy to focus on clearing your mobile food organization of the negatives as much as you can.
This may mean tearing down frustrating obstacles or shielding people from destructive behavior. Grumpiness, laziness, and nastiness are contagious and by reducing those types of negativity you give your people a better chance to shine.