..."Be yourself; everyone else is already taken" (the source of this quote, I'm not 100% sure where it came from, but I think the message conveyed in it is pretty accurate). Every individual person was endowed with a different genetic make up and experienced different environmental circumstances and events, so every person will end up being unique in his or her different way. Being yourself is the best way to live in life; trying to be someone else, you are destined to fail because you couldn't possibly have the same life experiences and genetic make up to become someone else). You can only possibly be yourself because your own life experiences and genetic make up are unique to you. You can find people with similar life experiences as you, but you will never find anyone who is exactly like you because everyone's experiences are unique.
I only learned this lesson relatively recently, and I was surprised I didn't realize it sooner. Someone told me this, and this life lesson had a profound effect on my life. That's because before I learned about this life lesson, I always tried to mimic those around me, and try to be someone that I was not. This not only ended up being a failure, but it also created jealousy in my heart. I ended up thinking, " why can't I have a girlfriend by my age?" or "why I'm not making an x amount of money with a 'successful' career by my age?".
After realizing that I can only be myself and not anyone else, these irrational thoughts disappeared. And then I started to set realistic goals for myself. I think too many people in our society try too hard to be someone they are not rather than being a unique individual.