Worst day at work today. Feel like ending it all.

Ever since I have come back this week from Diwali break, it feels like I made a fucking mistake going back home and taking multiple days off last week.

My manager is intentionally putting too much on my plate, while other peers are just chilling and laughing at me. Now, he is saying that we're running late on timelines because of me and I am a disgrace. He is laughingly mentioning to me that he will fire me.

I have a history of clinical depression and bipolar disorder, this is triggering me a lot and I can't sleep really well at night. I feel like ending it all and leaving this company for good. I have savings worth 12 months of living expense.

Is anyone else facing similar issues after coming back from Diwali?