You’ve gotten some great advice so far. But I’d like to point out that we don’t know your current financial situation - so for those who have suggested talking to a therapist that might not be possible currently as a session can run a couple hundred dollars depending on where you’re located if you don’t have the funds to do so.

A cheap and effective way is to just read some self help books on anger management - you can check them out for free at your local library. When I was in high school I got and read most of all the self help books from the library by my school and I truly believed most of those books helped shaped how I approach a lot of things in my life as an adult.

Also, my last advice which I always found to be quick and effective is just to literally walk away from situation to remove yourself from whatever is frustrating you to avoid making things worse. For example, your sibling spills some water on you as oppose to shouting at them and yelling obscenities- you could just excuse yourself and go into a different room to give yourself time to calm down.

I have a younger brother whom I haven’t spoken to in almost 6 years because of his inability to control his anger. One day during an argument (over text of all places) something inside of me just died toward him and I haven’t looked back. I have a daugther now whom I have tried hard to keep away from him. We see each other at family gatherings but I no longer acknowledge him.

Only you can control how you behave and respond around others. And they are in control of whether or not they wish to be around you.