Ricardo, si no moderas tu temperamento, tendré que echarte de clase.Ricardo, if you don't moderate your temperament, I'll have to expel you from my class.
Tienes que moderarte. - Acabaré perdiendo los estribos si Rafael no deja de provocarme.You have to restrain yourself. - I'll end up losing my temper if Rafael keeps provoking me.
Ha decidido consultar a un especialista porque no sabe moderarse cuando se trata de comida.He decided to see an expert becase he can't control himself when it comes to food.