Re existential crises, I know they're not fun. Have you tried anything that can bring you back to the moment though? Like a grounding technique? Such as focusing on your breathing or sensations in the body or something like that? I know I'm totally going out on a limb here, meaning that I don't know how existential crises are for you, but for me, sometimes things like meditation help.

Also finding something meaningful to do can often help existential crises. Idk, just some food for thought.