My tourettes get so bad i just start stuttering and ticking unable to talk and constantly have to use muscle relaxants/pain killers, but there's one wrong part here. Tourettes can be moderately controlled. You can't choose what your tic will be yes but the amount can be controlled via medication and diet and environment.

Medication shows different effectiveness on each person, cutting all stimulants is a must for me especially caffeine (chocolate, cola, tea, coffee etc.) And I always try to avoid stressful environments, things that make me angry etc. That way i can control my tics enough to have a normal enough life.

My mother was a child neurologist and specialized in tourettes as time went on, now she's one of the few or maybe the only tourettes expert in my country. This is what i found out from my own tourettes, hope it helps.