This is a symptom of someone that lived a 'square' life style all their lives... and never did something out of bounds or take risks You really need to spice up your life... Go to the dessert, do some 'safe' drugs, (aka, mushrooms)..., get a mistress.... get a motorcycle (and be safe about it), buy one of those trycycle open air cars and ride the coast, start playing some social sports seriously, (volleyball/soccer)…
The biggest one has been taking up climbing as a sport. Climbing has a clear path to improvement, has a wonderful social element, takes you to amazing places around the world, and can be as safe or risky as you're willing to push.
The other big component in life that I've taken up is art. Writing, painting, music, poetry, you name it. There is something innate about producing art that I think every human can benefit from. On that note, I think it's also easy for us to dismiss ourselves as untalented in any of these arts, but they're like any other skill and they'll become more fulfilling with time.