Plan for periods of sustained work
As Carlson's Law tells us, our brain needs time to become fully
engaged with a subject. Interrupting it once it has reached its phase of
maximum productivity means returning to square one:
loss of time, energy, and hence of efficiency!
Disconnect from the world around you
To some this may seem unthinkable, utopic. And it only makes
sense when one needs to perform a task that requires concentration. Of
course, disconnection must be planned (one doesn't simply
disappear!): adjust its duration, take into account one's post
and the context, set up communication (phone message...) and/or a
back-up, and on the day-to-day level get your entourage used
to the idea that you are not reachable at every moment. It's
also a way to create respect for your own time!
Above all, don't give in to the law of multitasking, but rather
make a contract with yourself: "for 5, 10, or 20 minutes, I will work on
this question and only this one." In such a way we
create, mentally, a bubble that protects us from the outside
world... and from ourselves!
It takes practice to do this successfully but the technique is worth trying out!