I wrote up some thoughts in reply to a thread that got yeeted under my nose so I'll bake a thread in case it helps that OP since I'm seeing many who despair like that.
It wasn't yet another of these "I think I might do it this time" threads but there's plenty of those on this board as well.
And sure, they might have just sought attention, but
>How do you deal with an existential crisis?
It depends on the type and extent.
If you're mourning the past, that's futile. What happened, happened. It is what it is.
But you still seem to have some future ahead of you and you've got the now that you can focus on.
Re-evaluate your priorities, if you haven't yet you might get surprised what you may had neglected and what turned out to have mattered little or not at all.
Also make sure to have good sleep.
If it's meaninglessness, yes, we likely don't matter that much on a cosmic grand scale. But we still matter to us, and that's what matters. If you have loved, then you at least had that experience and also were an impact on someone else's life, hence it is better. But if not, that's not the end of the world either but what holds you back?
Life's a bittersweet gift, see you space cowboy