What makes one think they got it?

Hi all, im 28 this year and since i can remember i got a "bad habit" of blinking my eyes and a "tic" something like pushing my upper lips towards my nose, the blinking stops when im 10 but it comes and goes. and recently i got another 1 which is moving my neck left and right.

and when i get tired the blinking got even worse. all these doesnt seems to affect my social life and it just might be a bad habit, so what makes 1 feel that they got tourettes?