light the fire
Synonyms
Examples
We as children went up the mountain to find feed for livestock, like goats, cows and horses, and because in the winter time we would light the fire in the house, we would climb the mountain to collect firewood as well. Because of that, I suppose I became used to climbing mountains.
I'd like to be able to light the fire a little bit.
It's the job of a manager not to light the fire of motivation, but to create an environment to let each person's personal spark of motivation blaze.