I aced the first 3 months at a new job, even got a raise and I was complimented that if everyone was like me the business would be on a whole another level.

...aaand at that point I had learned most of what was new and interesting and now all that's left is routine tasks -- and I'm dying. It got so boring so fast that my brain switched into serious dissociation and depression. I could just sit back and enjoy the easy job and get paid but no. Suddenly it's a struggle to finish just a simple email. Fuck this.