How do you concentrate; how do you fortify your focus?

The pomodoro technique has helped manage focus in short periods of time .
Short stints of breathing exercise as shared in “Fabulous” has been helpful.
The most imp. thing I learnt is your mind is bound to drift … the key is to acknowledge it …. park the thoughts by writing it down and getting back to the work you have decided to do in that 20-25 min before moving away and complete it.