This is probably a very weird habbit...it usualy starts with folding...
When ever I have somthing In my hand and I forget about it or dont notice Ill start tearing up the thing thats in my hand and my friends get annoyed because I have ripped up money a few timed broke some pencils,Bus tickets,Jewlery ect.. so It can be a bad habbit but I just can't help it I have to rip or break it up if I dont notice it lol.
Also I just can't help it when I see a bird in need so I bring it home or phone wild life centre and my parents just agree with it because I do it so many times even if they say no.
One more is when Im mad I give ppl this bad look and my mom gets So angry at me because she says I look freaky but Im so used to this look that I just do it in the middle of no reason lol.