One thing that works for me is the beer test. If the task is something that you could do after having one beer, then it won't present a problem if you do it wh

One thing that works for me is the beer test. If the task is something that you could do after having one beer, then it won't present a problem if you do it while getting constantly interrupted. Multitasking debilitates focused concentration at least as much as intoxication, which is why most people can't text while driving etc. If you find that the entirety of your to-do list is made up of things that couldn’t be done after a beer, then you are going to be unproductive in your work environment. Focus on eliminating the interruption. You may have to hack together a solution that people who don’t spend long periods deep in thought will understand. For example, wearing earbuds even if no music is playing, randomly shutting your door, making an emergency script that opens MS Excel when someone walks in so it looks like you were working rather than wandering Wikipedia so your subconscious mind could solve a problem, writing a description of something you are working on at the same time every day on your office calendar so that people will subconsciously not bother you during that time, and speaking at half speed when people ask you a question so that they jump to conclusions about what you might be thinking and reprimand themselves for not being more prepared before they come to you. Basically it comes down to the liberal use of improvisation of your work environment isn’t structured in a rational or logical way. I faced the same problem at a tech support job I had that demanded 3-8 computer repairs a day but didn’t delegate phone or front desk support to employees on a rotating schedule. The level of stress was at least 3 times higher than it needed to be, which is why I inevitably burned out and quit.