I have a few and drove my Soldiers and family crazy with my colloquial sayings. But I suspect I really have two I live by.

Be Bold, Be Brief, Be Gone: which translates, be confident in what you are saying and know the facts to stand by them; speak succinctly but specifically when presenting your topic; and do not seek accolades of your accomplished speech on your topic but move on as any compliments or questions will follow.

Sometimes it seems as if there are more solutions than problems. On closer scrutiny, it turns out that many of today’s problems are a result of yesterday’s solutions. –Thomas Sowell

Make sure to understand the long-term ramifications of the choices and decisions one makes today. We humans, most of the time, want to solve the problem immediately, but the immediate may be the detriment of the distant. As a PM, I always need to understand how the potential decisions I make affect the future efforts to reach the goal.