How do you deal with change?

I have been a planner for the majority of my life, so dealing with circumstances out of my control is challenging. I always wonder how spontaneous people don’t seem to stress about uncertainty. Perhaps it comes down to how we react to what happens around us.

Some of us can form solutions to problems thrown our way (see my power question.) But many of us must work within the confines of our ability. Especially when we are in Black & Brown bodies living in a white supremacist system. Change may be positive or negative, but it is always guaranteed in this life. 

Is there a particular way you handle unpredictability?