It's okay to stop when you're tired

Wise man said to stop when you're done, not when you're tired.
But I think it's okay to stop when you're tired.
It's painful when noone notices your absence. When noone appreciates what you've done. When they look at somebody else instead of you, the one who is always there for them.
It's okay to get out and to run away.
You have the right. You deserve to have pride.
Because in the end, you're not harmed at all. It's not "you need them", but "they need you".