What, Why, How and Who
WHAT you do matters.
WHY you do it may matter more. WHY is about your motivation. Your purpose. It's WHY that makes an activity feel meaningful.
The way you do it - the HOW - probably matters even more.
Because HOW you do things permeates every instant and every action and ultimately builds WHO you are - the way you habitually show up in the world, whatever you do.
Whether or not you know WHAT and/or WHY, pay attention to your HOW.