How would you act if you were trying to minimize regret?
Obviously regret comes not only from action, but to a large degree from inaction. Failing to act for what later are thought to be trivial excuses is certainly regret.
So what can you do tomorrow to minimize regret?
Seek, don’t shun, opportunity. Opportunity knocks, but you have to tear open the door.
Eliminate excess routine. Spice your life with different action.
Fake it to convince yourself to make it. Outsource your future onto your present.