I'm not diagnosed but i relate with many issues so for working i need to have the things i need open, and things that distract my self closed, need to write in a notebook the steps of how i will do the work for not losing myself in the process and it's better if i have some relaxed music also i have seen some improvements in concentration while listening to white noise

I like to use a pomodoro app to work without overwhelming and to avoid distraction with my phone