I can’t stop overthinking… I feel like i’m going insane :(

i’m having a full on panic attack, i never used to be like this, what tf is happening to me, why am i like this, i’m so convinced i’m a horrible person and i deserve to be shut out forever because of my thoughts, i’m tired of struggling with harm ocd, i’m scared that because i have mental health issues i’m gonna end up ki!!ing someone someday or end up on the news, when i was at work earlier i kept thinking “how easy would it be to ki!! someone and get away with it” someone help, i don’t feel normal, am i crazy?… 😭😭i know that with ocd you’re not supposed to have reassurance and you have to be “okay” with the situation but.. how am i supposed to be okay with feeling like i could hurt someone…

Alot is on my mind u feel like I’m going to lose my mind , not really a lot but if I think too hard I think I’m gonna lose my mind , I was trying to slp n I think I’m gonna lose my mind , I’ve always been having thoughts about going crazy it never really changed , I have other thoughts and triggers but they always somehow lead Bk to me thinking I’m going to lose my mind , guys I’m so tired , do I even have ocd

How to stop overthinking??