BE CREATIVE. Your post-fifty years should be your most creative time. You have wisdom of experience and freedom to apply it where you want. Avoid metaphors such as you are on the back nine. This denigrates the impact you can have. DONT BE A DILETTANTE. Dont just do a portfolio of things. Whatever you get involved with, have accountability and consequence. Drive it. FIND PEOPLE WHO HAVE VITALITY. Surround yourself with them; engage with them. Often they will be younger. APPLY YOUR GIFTS. Figure out what you are uniquely good at, what sets you apart. And understand the things inside you that give you a sense of purpose. Then apply them. DONT WASTE TIME WORRYING ABOUT THE FUTURE. Allow serendipity to play a role. Most of the turning points in life cannot be predicted or controlled.

Trillion Dollar Coach by Eric Schmidt