Don't be passive. Whatever you do, don't be passive and just let shit happen to you. Prepare and always be prepared. Train hard and long. You're on a mission in life. Have a sense of humor. The world is a miserable place otherwise and life's not worth living without it.
You must understand who you are, where you came from and where you're going. Work hard to learn about yourself, your family and origins and think about what you want your own family to look like. Make that family tree and put down roots.
Work on getting yourself rid of any OCD tendencies and any other bad/terrible habits you have from childhood or college. These may include drugs, too much drinking, unprotected sex, porn, insane cleanliness or bachelor filth. Go see a therapist already and fix whatever's bothering you, preventing you from blossoming in life.
Get your shit together. The sooner, the better. Be a put-together, reliable person who's on time to places and looks and sounds presentable. Don't be a shlump. Don't be a miserable SOB. People don't enjoy it and you won't be invited back.
"Pessimism of mind, optimism of will." - Antonio Gramsci
You're a fucking superstar, you just don't know it yet. You're an arrogant SOB and will be grounded. You're not that special. You're hopelessly unique. Carve that niche, baby, and let her rip. It's all yours. You're welcome.