I like this and the warning it entails, on the flip side of this I have found that you need to be able to delegate and trust. If you demand on understanding everything and doing everything yourself the world will grind you down. It's a big place and sometimes it is OK to delegate what is not part of your core business it let's you focus on this. Not everybody needs to be able to cook 5-star meals, you should know how to heat up some pasta, but don't beat yourself up if you can't bake a cheese soufflé.