Be more assertive, your friendliness and evasion of conflict is a good thing but also your worst enemy. Only someone who's failed will tell you that you can't achieve something. Don't worry about not being insignificant compared to those around you, you have talents that others can't see and a mind like no other. Don't worry about popularity, women, money or anything else. Embrace that which defines you: You WILL be truly happy once you realise that you are free to live your life however you want, do whatever entertains and pleases you, and be whatever kind of motherfucker you want to be. You'll understand when you're older, trust me. Do whatever makes you happy, and anyone who wants to tell you what you shouldn't do or how to live your life can suck our fucking dicks.
Also, don't drink the coffee (this will confuse him for YEARS).