“Be yourself; everyone else is already taken.”

Simplified Meaning:

Every person is unique and special in their own way. Trying to imitate someone else means losing what makes you different and special. Imagine a garden with all sorts of flowers; if every flower tried to look the same, it would be less beautiful and interesting. Just like those flowers, people should embrace their own qualities and not try to be a copy of someone else. Let's say you have a great sense of humor. Instead of trying to be serious just because you think others will like you more, use your humor to connect with people and make friends. Your real, genuine qualities are what will help you stand out and be remembered. By being yourself, you will attract others who appreciate you for who you truly are. This leads to more genuine friendships and relationships, rather than ones built on pretense. You'll also feel happier and more confident because you are being true to yourself, not pretending to be someone you're not.