There are many synonyms for the phrase "suit yourself" that can be used in a variety of situations. For example, "do as you please," "make your own decision," and "follow your own path" are all great alternatives. Additionally, "have it your way," "do what feels right," and "exercise your own discretion" can also be used. Other possible synonyms include "take your pick," "choose your own adventure," and "run your own show." Some people might also say "whichever way the wind blows" or "march to the beat of your own drum." No matter which phrase you choose to use, the underlying message is the same: do what you think is best for yourself.