Avoid making impulsive decisions when I am feeling desperate and vulnerable

I managed to avoid becoming homeless by not losing my temper in a heated argument between myself and one of my roommates recently. It was a stupid argument come to think of it, but at the time what I really wanted to do was say a lot of hurtful things that undoubtedly would have had me thrown out (he owns the house). I’ve always been somewhat juvenile when confronted with hostility, and it’s always come back to bite me in the ass. It’s a comfort to actually see myself as I’ve grown up about certain things. It’s a comfort to recognize the benefits of my chosing not to be impulsive.