Entering into the zone is a fascinating thing to achieve success. Whatever you are doing, from the simplest to the most complicated, this magic situation will allow you to give the best of yourself. But to reach this level easier, one thing I can recommend is to pursue your dreams. 

It may be a cliché, but the truth is that you'll focus better if your goal is something you like. 

This situation will also allow you to speed up better and live your life with less stress and more time available.