Realistic Expectations

When you collaborate in a common goal or voluntarily help other people, when is it appropriate to say "Enough is enough"? In other words, when is it appropriate or is it even appropriate to claim your own stopping point? Is there a correct balance between using your time and energy for yourself versus using it for the benefit of others? If there is a balance, what is the measure used to determine the amount of time and energy to balance between the two?

Just something that struck me today.