I honestly just go with what ever makes the most amount of sense.
For instant, are they short and quick on their feet? I'll probably give them a knife of some sort. Are they not very keen on getting close to people, and have good eye sight? Gun or bow. Are they taller? Sword, possibly a shield...
I have massive anxiety, to the point where I sometimes can't leave my house, where it makes me physically I'll, or where I can't even move out of fear. It's not a cute quirk, it's an illness ;-;
I hate it when people use mental illnesses to glam up characters too. I actually have mental illnesses and lemme tell you, it's not 'cool' or anything >.<
I actually generally make my characters have 'tragic backstories' tbh. However, I research a frick ton out of mental illness and such (plus I'm a sociologist in the making ^o^), and contemplate on backstories for weeks, months at a time. To be honest, I don't know why I started doing this, but I...