Struggling to Stay Calm: Tips for When Things Get Tough

my mindset is nuts rn. every day seems to be getting harder and i feel further away from reality. i stopped seeing my friends today, being w them felt damaging to me. but most of all i can’t help but blame myself for everything and i mean just anything that could come to my mind and i feel guilty and worthless. no matter what i do what drugs i take it won’t stop it’s been like this for a few weeks i’m not sure but i’m struggling. i’m struggling to just stay calm not let anything affect me and to just be fine with what i have right now. but it’s really hard :( does anyone have any tips for when things get to this point cause i feel like i have it all figured out but i guess not