how to just work and not think

Hi, i need help. I’ve huge problems with getting my regular daily life and job just done and not just sitting in front of my laptop being stressed and not starting the task at hand. So i wanted to ask if you guys have some recs on how to get your brain to stop thinking and resisting and just getting the stuff done that needs to be done. Might be vitamins or anything else, i’m getting new meds tomorrow

Thank you in advance!!