Many times “quit” is a gateway to find success somewhere else. Successful birds often have their eggs split between multiple baskets.
I knew a guy, he invested all his life focusing only on his dream career… Everything failed, because life happens, he couldn’t feed his family and after a while his wife and kids left him. He was around 12 years older than me, but we became friends for common interests (art, comics, drawing, games, etc).
Long story short: he doesn’t exist anymore.
While I split my focus a bit to keep going, he couldn’t handle failure on the only thing he ever wanted to do and depression consumed the life out of him.
Because of that, I always consider a dangerous “advice” when people say “-never quit!”… Quitting could actually be the solution for your struggles and possibly even save your life.