IWTL how to find passion in life.

(Sorry! Long rant, TLDR at the end)

I've always had trouble finding hobbies I enjoy. No matter what route I take, a more loose or strict one, I end up disliking it in the end. There are things I want to try, but I've felt burnt out from normal life, from things that are easy for others but drain me for some reason. (Just in case, no i'm not autistic) I'm taking Zoloft, levothyroxine, vitamin d, and I think I'm alright medically wise. But I can't find the source of this exhaustion keeping me from doing anything I want to enjoy. I guess I'm just a bit confused, I've always tried to improve in all areas of my life, but I don't feel that passion for things and I don't know what path I want to take in life. You ever feel like you are a different person to each person you meet, to the point where you don't know what you're actually like? I wish I could find out who I am to make it easier to decide my goals and paths in life. This was deeper than I intended lol

TLDR: How do you rediscover yourself when you have no clue who you are or how to read your own emotions? How do you discover your passion and joy in life, and not only having your joy be based on the approval and happiness of others? Thank you! :D