Meditation. Feels like it might do something useful. Not quite as hip as LSD microdosing but much cheaper.
Questions: Can it help with life? With productivity? How much of it do you need to actually help? What kind?
Gwern, 2013 Lewis meditation results:
A small group of Quantified Selfers tested themselves daily on arithmetic and engaged in a month of meditation. I analyze their scores with a multilevel model with per-subject grouping, and find the expect result: a small decrease in arithmetic errors which is not statistically-significant, with practice & time-of-day effects (but not day-of-week or weekend effects). This suggests a longer experiment by twice as many experimenters in order to detect this effect.
Popular canned gurus
No time to commute to tiny himalayan mountain monasteries? Here, have somes martphone-mediated mindfulness.
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Levy, David M., Jacob O. Wobbrock, Alfred W. Kaszniak, and Marilyn Ostergren. 2012. “The Effects of Mindfulness Meditation Training on Multitasking in a High-Stress Information Environment.” In Proceedings of Graphics Interface 2012, 45–52. GI ’12. Toronto, Ont., Canada, Canada: Canadian Information Processing Society. http://dl.acm.org/citation.cfm?id=2305276.2305285.
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Tang, Yi-Yuan, Qilin Lu, Xiujuan Geng, Elliot A. Stein, Yihong Yang, and Michael I. Posner. 2010. “Short-Term Meditation Induces White Matter Changes in the Anterior Cingulate.” Proceedings of the National Academy of Sciences 107 (35): 15649–52. https://doi.org/10.1073/pnas.1011043107.
Zeidan, Fadel, Susan K. Johnson, Bruce J. Diamond, Zhanna David, and Paula Goolkasian. 2010. “Mindfulness Meditation Improves Cognition: Evidence of Brief Mental Training.” Consciousness and Cognition 19 (2): 597–605. https://doi.org/10.1016/j.concog.2010.03.014.