If you're looking for synonyms for the phrase "have confidence," there are plenty of options to choose from. Some of the most common include "believe in oneself," "trust oneself," "have faith in oneself," and "be self-assured." Other synonyms for "have confidence" might include "feel certain," "be confident of one's abilities," "be convinced," or "be resolute." No matter which of these phrases you choose to use, the important thing is to project an air of self-assurance and belief in yourself. With the right mindset and the right expressions, you can achieve anything you set your mind to - and inspire others to do the same!