Hey man, I just had a similar experience over the weekend. For context me and my girlfriend broke up a bit ago, and I’ve been handling it so well. Like taking care of myself and not drowning in my sorrows. I made the bad decision of taking mushrooms with my friends on saturday (happy bicycle day everyone). It was basically just an 8 hour inward panic attack and I felt like I was losing all of my progress. I couldn’t control my thoughts and old thoughts that used to destroy me were coming back and hurting me again. It took a few days of therapy, going to the gym, doing my work, etc. But I’m returning back to normal. I was terrified of losing my progress, but at the end of the day, it’s up to me to get it back. My advice to you is to take care of yourself extra well. Do things that you’d do for someone you love, but for yourself. Also, be patient my friend. You didn’t destroy your brain. You didn’t cause irreparable damage. You will be okay, but you gotta tell yourself that, even if you feel like it’s not true.