How do you stay focused and productive while working?

Make plans, set priorities, and proper break.

I stay focused by setting small, achievable goals and taking short breaks to refresh my mind.

In my work, I find echoes of the Pomodoro Technique, though not strictly adhered to but rather dictated by my natural rhythms. This entails periods of intense focus followed by brief intervals of relaxation. The issue arises when faced with a highly complex problem that doesn't allow for breaks...

There are 2 things that I have done that makes staying focused incredibly easy and smooth for me. 1) Meditate. I've been meditating for 3 years now. The practice of stilling the ways my consciousness moves has cultivated mastery over this. 2) I have found my life purpose / vision. A goal for 10 years down the line can be worked backwards until I can see the actions that need to be taken in the present.