not lukewarm

When you decide to work, strive to achieve the kind of intensity that can only be made possible with 100% of your attention and energy.

When you decide to take a break, have the discipline to come to a screeching halt so that you can recover and conserve your energy. 

To waver between these two modes where you are neither working at your best nor resting at your best is somehow the most exhausting and the least fulfilling approach of the bunch. 

When it comes to your commitment, in general, it’s best to be on or off — hot or cold.

Not lukewarm (at least not for too long).