I can't figure out why I cry when I'm angry or frustrated with someone or at a situation. I've been doing it as long as I can remember and lately it's been extremely irritating. I feel like it's weird to ask my friends what it means because they all seem to be what's considered "normal" or "fine". I ranted to my dad earlier about people at school being extremely unfair and I just felt the sudden urge to go to my room and cry; I hate it. Does anyone have any studies they've read about or any advice on how to help it?