MEL ROBBINS

... for what happens to you. It’s tempting to blame your problems on some external factor, but to fix your problems you must have power over them. You can’t have power over aspects of your life unless you take responsibility for them. 

Unless something truly terrible happens, there’s no room for grudges.
You will annoy each other, of course, but it’s always better to get over it quickly.

People naturally want to play it safe because it feels better in the short term. 

To break through this tendency, bombard it with tough and thoughtful questions. Hold other people accountable to do the same. Then hold them accountable for strategizing and executing.