I struggle so hard with identity. 

I find one thing I love usually cos I’ve seen someone on the internet ive wanted to become and I consume myself with that thing until someone comes along that ‘does it better’ so to speak and I ditch that love, and craft an adversary out of the person that does better. 

It was makeup - I wanted to study makeup artistry. 
Now I collect vinyl.

Or I take on things that people I wanna be like have an interest in. 
My sister loves plants. I bought one. She practices meditation and believes in Chakral alignment. Guess what? So do I. 

I find myself taking on more and more of what my FP/boyfriend likes, so we have something shared and in common but he doesn’t reciprocate that behaviour and I feel isolated.  For example before I met him, I haaaaated Soccer. Now I love it, watching Liverpool play with him is a highlight. 

I guess my questions are;

How do I know if the things I like are truly things I like? 
How do I know if a hobby is genuine?
How does one develop a completely organic and individual personality trait/hobby?