You don’t regret what happened—you regret the meaning you’ve assigned to it. - Mark Manson

You get anxious about confronting somebody in your life. That anxiety cripples you and you start wondering why you’re so anxious. Now you’re becoming anxious about being anxious. Oh no! Doubly anxious! Now you’re anxious about your anxiety, which is causing more anxiety. Quick, where’s the whiskey?
Or let’s say you have an anger problem. You get pissed off at the stupidest, most inane stuff, and
you have no idea why. And the fact that you get pissed off so easily starts to piss you off even more.
And then, in your petty rage, you realize that being angry all the time makes you a shallow and mean person, and you hate this; you hate it so much that you get angry at yourself. Now look at you: you’re angry at yourself getting angry about being angry. Fuck you, wall. Here, have a fist.
Or you’re so worried about doing the right thing all the time that you become worried about how much you’re worrying. Or you feel so guilty for every mistake you make that you begin to feel guilty about how guilty you’re feeling. Or you get sad and alone so often that it makes you feel even more sad and alone just thinking about it.
..Welcome to the feedback loop from hell.

If you feel crappy, it's because that's your brain telling you that there's a problem unaddressed or an issue unresolved. In other words, negative emotions are a call to action. When you feel them, it's because you're supposed to do something. Positive emotions, on the other hand, are rewards for taking proper action. When you feel them, life seems simple and there is nothing else to do but enjoy it. Then like everything else, positive emotions go away, because more problems inevitably emerge.

There are some experiences that you can have only when you’ve lived in the same place for five years, when you’ve been with the same person for over a decade, when you’ve been working on the same skill or craft for half your lifetime. Now that I’m in my thirties, I can finally recognize that commitment, in its own way, offers a wealth of opportunity and experiences that would otherwise never be available to me, no matter where I went or what I did.