2 months after weed bad trip still feeling bad, what to do?

I can PROMISE you, it will go away. Last year i had an overdose (yes its possible) on weed brownies. My high lasted over 14 hours and had to take 4 advil PM's to induce sleep. I lasted like 8 months with extreme anxiety, suicidal thoughts, random panic attacks (whether i was sleeping or wake) and constant reminder of my regretful mistake. It wasnt until i searched youtube for deep breathing techniques for anxiety. Please check them out. It may seem pointless and stupid, but i promise you with my life (as a testament) that with time (took me apprx 1 month) to have a 40% decline in anxiety attacks. While learning how to "breath" i avoided things that triggered my anxiety (ie: drinks containing caffeine, alcoholic drinks, and avoidable stress,) and i tried living a healthier life and exercised more often. The main thing to getting better is 1) Have faith in that what ever you feel, it is only temporary and CANNOT hurt you. 2) Do not retake what ever caused it, as it can worsen what you feel now. and 3) Deep breathing saved my life, and it will save yours...learn it, and watch many techniques on how to do it. As i said, it seems like it does nothing at first, but it will make life much more beautiful than what it feels like now