What you decide to focus your energy on is a choice. Even in the most difficult of situations there is a potential "silver lining" if you are looking hard enough.
Focus and discipline will beat IQ points every time. It's not the most intelligent person who typically wins in business, but instead the individual who stays focused on and committed to their objectives despite the inevitable obstacles and other distractions that will appear.
You are the Chief Accountability Officer. If you are unhappy with the level of performance in your company, look in the mirror first. The culture of an organization almost always assumes the strongest characteristics of its leader (both good and bad).
It's important to broaden not narrow your professional and social circles as you get older. New doesn't always mean better, but it does mean different and different forces you to challenge your own conceits and avoid groupthink.
One of the key responsibilities of any leader is to cultivate a potential successor and promote this mindset throughout their organization. Dependence upon any one person is never a good thing.
How we finish is more important than how we start; strive to build consistent positive momentum and end with a flourish. Dig down deep and you will find reserves of strength, energy and perseverance you never knew you had in you. By all means, never give up when something is important to you or allow events to let you simply fade away...
Your own ego can be your biggest obstacle to success in a group context; don't worry about who gets the credit or speaks the most, rather focus on generating the best ideas and getting results.
Leverage your emotional capacity to make critical points as needed – sometimes emotion IS called for…