Hey there
I definitely feel with you.
I am a very emotional personal aswell, and always have been. There are many things that cause me to react emotionally, but there are some factors that are just so much worse than others.
Low bloodsugar - if and when I don't eat properly I am really prone to react emotionally and in an aggressive "i dont give a crap"-way. So for me, regular meals really help.
Exercise - when I don't get out much, my mood goes down and I get "sensitive". I will react much sooner to alot of things, so I try to take a walk at least twice a day even if i am in "lockdown".
Being tired - not sleeping enough really messes alot with my emotions. It can have catastrophal consequenses. I go into a "**** this shit" kind of mood. If I run bad, I start doubting the the f*ck I even play poker to begin with.
Aceepting the truths about poker - It helped me alot to talk to experience players, and read articles/books regarding the poker mindset. I can recommend you the book "The poker mindset". It can be purchased in the FTP store at a very low cost and it is DEFINTELY worth it.
Emotions are often caused when expectations aren't met. You have to understand that we as pokerplayers often see the pot as ours when we have 80% equity for example. We get really upset at times when we don't win what we feel is rightfully ours.
So a very important step, is to understand that strings of bad luck and losing pots is all a very normal part of poker, and that it's bound to happen to you over and over again. The only way to deal with it is to accept it. Start focusing on your plays. How well did you play? Did you make only optimal decisions? Well then, whats to moan about? It's the one thing that matters in the long run. Money and success will come along with it.
There is a light at the end of the tunnel, and as soon as you decide that YOU are gonna be the boss of you, not your emotions, than you will soon see the light too.
You can do it! 
Kind regards,
vonki