The best I can do is hook into the truly unending love and compassion that G*d offers, and fill myself with as much as I can, and then share as much as I can, but even then, I have my limits. G*d's love is unlimited, but ours isn't. That's why being loving and compassionate and understanding are such profound virtues. Because they require something extraordinary.
Because we're human. Because we don't have an unlimited capacity for anything. Because we all get tired. And that's why G*d is such a comfort, because not having to do this all on our own is the hope we need,the hope that love and compassion and understanding can make a difference.