So you get no enjoyment from anything?
Never made and ate a good meal that had you feel “I needed that”?
Never bought a random toy or played a game and felt “that was fun”?
Is receiving sexual pleasure just a meaningless chore?

Maybe the issue isn’t not feeling it, maybe you’re looking for some great high that makes trivial things worthless by comparison.
Were you perhaps spoilered by other people telling you what to expect and those expectations never came to pass?
Or are the bad experiences so ingrained that the good ones simply can’t compete?

Regardless, active exploration is the way to change a state of mind. Passivity leads to numbness. Or so I’ve been told.