Finding it difficult to get focussed on honing your thesis? Questioning your choice of career? Feeling indifferent in the face of prospect getting a knotty problem solved? Taking off sun-glasses may help. At least if you believe the results of recent paper suggesting that use of sun-glasses may reduce the antidepressant effect of sunlight and lead to emergence of winter depression.
Alpayci M et al. (2012) Sunglasses may play a role in depression. Journal of Mood Disorders 2:80-83. doi: 10.5455/jmood.20120529055051