Hmmm, anxiety in a man's heart weighs it down but good words cheer it up! People indeed react to anxiety in different ways, some get angry and irritated, but you decide to cut your hair. Well, the truth is that being overly worried about tomorrow doesn't solve anything, instead, it can lead to a premature death.
I'm glad that you've realized that we can't control people's actions but we can control ourselves. Personally, I find talking with a trusted person so effective, and prayer too. I wish you success!