I've had some dark times. Especially when I lost my religion.

Existential crisis is depression's brother. They often travel together.

Figured out that my purpose is taking care of my people.

My people are my immediate family, friends, people in our small alternative subcommunity, pets. It's sort of like a tribe and is small enough I can wrap my head around it instead of the world and society at large. It appeals to the pagan inside my inner atheist.

Find someone or something external to yourself to care about that you can meaningfully help and take care of. I'll give my wife a hug for you.