I threw something once and it bounced off a sofa (which was my target to avoid damage) and it hit someone I cared about–that was the last time I used throwing as my outlet for frustration. Now I just sigh loudly, take a deep breath, and try the counting thing others have said. Good luck and if you feel stuck, it’s ok to talk to a professional. It’s better than hurting someone or yourself.
I put an old iPad in a picture frame case and use it as a HomeKit hub and dakboard screen.