Jerry Weinberg has a chapter on burnout in one of his books [0]. He refers to the idea of 'the oxygen mask', making sure you've taken care of yourself so you have resources from which to give. He talks about how having a long list of 'shoulds' can wear you down, and how competence can lead to collecting more responsibilities than you can manage.
He then places burnout at the foreign element stage of the Satir Change Model (see, e.g. [1]): Old status quo - foreign element - chaos - transforming idea - practice - New status quo... with the intent of using your present discomfort to evaluate changes you might want or need to make. If the idea seems helpful, have a look.
[0] 'More Secrets of Consulting: The Consultant's Toolkit', Gerald Weinberg
He then places burnout at the foreign element stage of the Satir Change Model (see, e.g. [1]): Old status quo - foreign element - chaos - transforming idea - practice - New status quo... with the intent of using your present discomfort to evaluate changes you might want or need to make. If the idea seems helpful, have a look.
[0] 'More Secrets of Consulting: The Consultant's Toolkit', Gerald Weinberg
[1] http://dhemery.com/articles/managing_yourself_through_change...