Werther's a will, there's a way
Refers to bribing someone with a piece of heavenly-tasting candy as an incentive/reward for tackling a difficult job.
I suppose dat for someone with a sweet tooth, it might indeed be true that "Werther's a will, there's a way". I'm not into candy all dat much myself, though, so for me, I'd much prefer da promise of just a generous swallow of "da milk of human kindness", such as being heaped with praise and gratitude and/or being showered with hugs and kisses.