It seems which the crazy enterprise microservice project which I'm doing (an awful distributed monolith splitted in 10+ microservices, hard to test and requiring continued context switching and running on an unreliable platform) has finally won over my brain.
It's so boring and frustrating to work with which I lost all my ability to focus, I used to be able to program well even under significant distress but more than two years of continued boredom, repetitive tasks and frustrations destroyed my motivation and with that my ability of focusing died. It doesn't matter if I'm at home or in the office, my brain is like a car stuck in neutral gear and I struggle to focus in every task.