A personal favorite for professional reasons!

“Focus on the bottleneck. Expand, find alternates, bypass or exploit”.

“CRITICISM - If it is Untrue DISREGARD it, If it is Unfair STAY CALM, If it is Ignorant SMILE, If it is Justified LEARN From it..”

The 1st one have been successful in implementation. The 2nd one took me 15 years to implement….