Honesty/bluntness at work

I am struggling at work because of my honesty. I say things how I see them or tell people exactly what happened, not covering up for other people. They think I'm too brutally honest and I don't understand what is wrong with telling the truth. Honesty is one of my values. I feel like I have to change who I am at work and it makes me sad.

I am so depressed at the moment, I wonder how I will succeed in the workplace or fit in. I'm 35 and I feel so stupid. I'm honestly at a point in my life where I feel like I'd be better off not being alive anymore.