What to do when you're obsessed with the idea of not regretting your life?

The older I get, the faster time flies. Nowadays, it seems like years go by in the blink of an eye.

Every since I was young, my biggest fear was that I would spend my last moments alive thinking about how I've wasted my life. The thing is that I have a hard time feeling like I'm living and not just surviving, and think about it all the time.

In a perfect world, I would just do whatever I wanted, but the reality is that certain obstacles like anxiey or the need to have and spend most of my awake time working make it incredibly hard to live a life I won't regret.

Any advice on how to deal with it?