>>214540202 (OP)
Never too late to change. Just block a few hours of time a day, find the most uncomfortable chair and table in your house, cut onions and rub a bit of it into your eyes and strain your jaw and mouth muscles until they start to feel sore, and pretend a 3 meter tall man with your father's face (for proportion, not that 3 meter tall people usually exist) is leering over your back watching for an excuse to slap you and scream at you. Like, if you get a low words-per-minute score on a typing app or something, suddenly raise your hands in the air and scream ahh no I'm sorry etc. It adds to the realism
For some reason I completely lost the ability to cry at around the age of 12 but onions make me tear up so hence the recommendation