Still haven't figured out what I truly love at age 40+. Guess it's a life long mission. Maybe that's what I truly love to do -- to figure out what I truly love to do.
I haven't either, although I'm a little younger than you (about to turn 31), so deep down there's still hope I eventually will within some reasonable timeframe, while I'm still "young".
I wish you good luck. It's tough (because we cannot lie to ourselves).
Don't worry: what you truly love is a moving target as no one stays still. No 40 year old is like themselves at 30 or 20, or will be at 50.