It is not enough to put a labor of love into your work; for others it is just a commodity.
It is not enough to sacrifice all you have until you're tearing yourself to shreds; what do people care about another's sacrifice? To each of us, no one else's problems are ever as dire as our own, no one else's life so desperate as our own struggling existence.
There is no work accomplished until there is a result, and there is no accomplishment until there is a reward. The struggle comes in finding our own reward, because the reward from others will never be what we were hoping.