Panic Attack

Today I was at work and was subjected to having to witness loud, aggressive, obnoxious verbal abuse directed at one of my co-workers. I became distraught, got up, walked into my boss' office, told him what was happening, suggested he go hear it for himself, and advised him I needed to leave and go take a walk. I went to a nearby cafe to pick up some food. About twenty minutes later I went back to my office and had a full-blown panic attack. I really hate stuff like this. I just want to retire again and live in peace.