You are right to want to vent off you agner. It sounds like you are under a lot of stress. So, take a different approach. Find the source of your stress (school, job, relationships, etc.) and put an end to it. It is harder than it sounds. Excercise and meditation work wonders on stress, as does eating the right foods. After you lower your stress level, I think things will bother you less. Another thing I’ve been trying lately, is removing myself from situations like you described. Running away isn’t the answer, but it calmed me down so that I could interact rationally again.
Kill the stress! Good luck!