http://blogs.hbr.org/cs/2011/08/why_your_passion_for_work_coul.html
TL;DR - don’t get enveloped in smaller work bubbles. The bubbles will start dictating your life. We loose focus on the bigger picture, the purpose. Look beyond, think beyond, you’re meant to do so much more!
*// personal experience - burnouts suck out everything, even your core passion. Stay away from the cobweb.*