How I try to stay productive:

I seem to be slightly less distracted if there are other people around me. Probably because I have to make an effort to focus, which stops a part of me secretly searching for distractions when there are parts of work that I would rather avoid (like googling error messages). So I used to spend some time of the day in a café or in our family kitchen.

Taking breaks an going for a walk, preferably in the forest (when I work from home).

Prioritization of tasks also helps to focus and do one thing after the other. That said, sometimes it inspires me to do more than one task at a time.

Writing down what I did and want to do (in an actual note book on paper) helps me start a new work day, especially after a weekend off.