I also adopted a similar work approach earlier this year. Worked crazy hard 16-33 y/o with extra non-paid hours. I now manage all work shoved on my plate as a priorized backlog and no longer allow people to drive the priorities given to me. I am somehow in a high level position with many teams to manage and avoid at all costs offloading tasks to others without these items being filtered through my lisl first. I always make sure that I won't interrupt someone else's current tasks. I also have discovered the power of requesting to people that they send me an email with all the detailed informations for a particular task. With IM such as slack these days, people tend to throw away their responsabilites on others cause it's just so easy to do. Overall, I think that being more calm and facing the truth than I no longer want to accomplish more than 40h a week as resulted in me working better without any comprises.