How can I customize the Touch Bar interfaces for my tremor? I have an essential tremor. This means that the slightest unintentional graze on the Touch Bar or touchpad on my MacBook Pro can have extremely undesirable consequences.

So how can I change the sensitivity on those input devices and yet retain the key functionality of those devices? The key functions provided by the Touch Bar are the escape key (accidental grazes are easy and can have extreme consequences), and changing the sound volume or screen brightness. All other features of the Touch Bar are accessible by other means.

The touchpad also has key functionality, but not quite as critical as the escape key. But once again, slight grazes can result in highly undesirable effects.

How can I change the sensitivity on the Touch Bar and the touchpad and still retain the essential functionality provided by those input devices?
Many of us have difficulties with aspects of UI design, both in hardware and software. Look past the frustration and think around the problem. 

A simple fix for me was to attach an external keyboard, wired at first, but then wireless using a Matias 101-key keyboard with the number pad on the right, a design I've been using since the DEC VT220 terminal keyboard came out a few decades ago. I also use Apple's wireless trackpad, which is larger, and sits where it should be - next to the keyboard.

I see Matias now has a backlit model! How cool!

Be well. Take a deep breath and center yourself.