[erganemic]

I also had to adapt my handwriting - halfway through my math degree, my inability to tell symbols apart genuinely started to become a problem. I ended up having to use a horizontal bar on 'z' to tell it apart from '2', and added a loop on the tail of my 'y's to keep them from looking like a wayward 'x', both of which persisted into my normal handwriting.

(And I still swear that my differential equations professor wrote problems that used mu, 'u', 'v', and nu at the same time as a prank on people with bad handwriting.)