We tend to only use "what if" when looking in the past at things we wish we could change.
What if I'd given my best and prepared?
What if I hadn't left that relationship?
What if I'd just won the lottery?
We tend to fill "what if" with regret and sadness about things behind us that we can't control. That's a devastating way to use "what if" - and I might argue if that's the only way you use it, to eliminate it entirely from your vocabulary.
But as David Goggins points out, we can use "what if" in a very powerful, positive way.
Watch the video by Jake Thompson and find out how.