Find a healthy outlet.
Everyone needs something to let all their life frustrations out..
Do you play an instrument/sing/dance/draw/write? etc etc etc.
Take one of these talents or things you like to do and make it into your outlet, that you can use it to diffuse your anger and frustration.
Also the thing about not having the tools to deal with a huge nisayon, you have to remember that Hashem doesnt give a nisayon to someone who can’t do it. So tell Him “Hashem you gave me this nisayon and You make no mistakes so its obviously ment for me.. Now I need you to give me the tools or at least a mentor or guide to help me get through it. “
Hatzlacha Raba