Affiliate Marketing Secrets

I noticed that my friends are all known for something. One is sarcastic and funny, but also plays drums and likes rock music from the 50s to the 80s. Another plays guitar (mostly acoustic) and loves singer-songwriter type of music, John Mayer being his favorite and others of the like. Another is a gamer and LOVES computer programming as well as anything related to computers. My friends would identify me as the polite, quiet girl which is ok but those are qualities, not abilities or talents. Everyone in the group gets along with each other splendidly and there’s no competition at all but I want a niche of my own. My interests are nutrition, yoga, writing, and a tiny bit of psychology. I love anything related to health and wellness but I’m still learning a lot about the above interests so it’s still a bit hard for me to inform others about those things, also because they’re not interested in them.
My primary question is: in my downtime, how can I pursue my loves? What can I work on daily, so that I have more to talk about on Skype and I guess, show off when I’m with my friends?
When they come over to my house, I’ve tried preparing fruit trays by cutting the fruit in fancy ways or arranging them in aesthetically pleasing ways. They don’t care because they’re not mindful of their health and “it’s just food.” Like other college students, they love pizza, chips and soda. I’ve tried cooking dinners that are healthy but they didn’t really finish everything I prepared the way they can obliterate four, large pizza boxes. So I can’t really show off much of nutrition. (Can I?)
For example: It’s easy to talk about video games because you basically have to play a few at a time, and keep advancing in the levels so that you can tell others about each level and the secrets, ease, or difficulty of the game when the group is gathered together