I'd say two is more key. Most people seem to hold on to control as a way to avoid failure. Let people fail. Just make sure you have a safety net to keep things moving.

Having kids helps underscore this. Let your kids fall. Just don't take them to the Grand canyon right away.

what if your team can't afford those failures and you're responsible ?

Then you are on a death march, most likely. Failure happens. Any plan that requires avoiding failure is merely doomed.

Then hire better people

Then you or they don't have #1 covered.