How to say "true to yourself" in English?

Open your heart and show your true self, or live a tired life with a mask every day. It's up to you I hope to be myself again! Just be yourself! For better or worse, being yourself is not just a proverb. All you can do is be yourself! Besides being yourself, there is also an expression in English "Let your hair hang down". This statement originated from the19th century and painted a lovely picture. In the past, many western women had long hair, and when they went out to socialize, they would wear it on their heads and comb it into various styles. When they got home at night, they took the hairpins out of their hair one by one and let them hang over their shoulders naturally. The essence of hanging freely is to remove the surface decoration and make everything look natural, true and relaxed. Later, "long hair" was used to mean "relax and show your true self" 1. Put your hair down, not necessarily for women, but also for men! For example, the president has to make so many official appearances that he seldom has a chance to relax and enjoy life like an orderly person. The president has to attend many public occasions, so there are few opportunities to enjoy life as easily as ordinary people.