impetus

is a word my middle school geometry teacher said a lot. 

I think if I ever become a teacher I will pick one smart word to say a lot.

It will have to be a good one.

Drawing all the time creates an impetus to draw more. 

If you're unsatisfied (which is about, 90 percent of drawing) you'll keep going.

birthday present - plants vs. zombies / SMB3 crossover