BB, I think you're thinking of The Color of Night. The one where he's a psychiatrist and he takes over his friend's therapy group after the friend is murdered.
Damn, Robb, beat me to it.
Finish each day and be done with it. You have done what you could. Some blunders and absurdities no doubt crept in; forget them as soon as you can. Tomorrow is a new day; begin it well and serenely and with too high a spirit to be enbered with your old nonsense. ~ Emerson