Mother Theresa help n work all her life, wat she did is never 对得起自己, she could have stay in a hospital for d rest of her life, at least more comfortably than walking all over India under d hot sun, helping others, but wat she did is very 对得起 others.

Another living example:

http://www.youtube.com/watch?v=wvyh8dXvLt8&feature=player_embedded