The trick is to only learn a couple new movement mappings at a time and use them during one's workflow for a while, up until they feel ingrained. Then repeat, iteratively building up one's movement skills in VIM.
One can say many things about VIM, but not that learning it's movement mappings will make your required APM (let alone mouse clicks) go up to "get stuff done".
Honestly, once a basic set of these movements has been learned, any other editor without them will feel like a drag.