Brother, your purpose is just to be yourself and enjoy life best you can, that is it. Failure is a social construct.

I used to have that, for a long long time.

Then I realised:

All the other animals are doing things right, just by living their lives and doing what comes naturally. They don't need to consciously know the purpose and have a goal, they're fulfilling it already.

I don't see why humans would be any different. We don't know what our purpose/goal is but I'm confident that we're all fulfilling it, whatever it is.

The purpose of life is to live. Just by living, we fulfill our purpose. Life is inherently meaningful, whether you figure it out or not.

Smoke weed every day.

That's usually when I realise I need to sleep. My interoception is really bad, so I notice when I'm feeling tired. I will notice when I start getting general anxiety and depressive feelings, and those always* go away with sleep.

Learning how to relax, taking walks in nature, and spending time with friends have also worked for me. Deciding which one will help at any given time is an art I have yet to master.

*when no external factors are present.

i realized "the meaning of life" is essentially a christian concept disguised as something universal and stopped worrying. "life is useless", as ailton krenak would say -- usefulness is a property of things, not people, after all

i have a different kind of dread: my own mortality. it comes every once in a while and i just wait for the dread to go away

the only way to preserve mental health in this, the worst timeline.

I know telling you not to worry is pointless, but try to realize & remember that everybody's a failure at doing their life "right" - I can all but guarantee you not a single person has ever managed that. We all have missteps that we beat ourselves up for far too harshly.

Work goals are fine, but you should try to have personal ones, too. Anything from learning new things that will broaden your employability, to figuring out how to get ahead financially so you'll be prepared for the unexpected and/or able to retire early if you find something else to do with your life that's of more interest than your job. Personal goals are known to be essential to healthy mental well-being, too.

ETA: The meds someone else mentioned are also helpful if used properly. This response I gave someone else a week ago should explain what I mean.

Figure out what you want to have done looking back from your deathbed, and work backwards from there. Literally just imagine you're old, at death's door, reflecting on your life. Really try to get into the role. Take some time with it, be thoughtful, don't just rush to an answer.

Whatever you think old-you would wish you'd've done at this age, do that. Spending more time in nature, exercising, reading more, connecting with other people, helping the less fortunate, whatever.