I've only read about half of this, but I'm reminded of Jane McGonigal's TED talk about SuperBetter: Small things one can do frequently to improve one's mental, physical, and social state.
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Thanks, I'll check it out. I have to be careful with self-improvement stuff. I'm prone to set a ton of ambitious arbitrary goals for myself and then succumb to self-loathing when I'm distracted by Netflix and naps.
Sounds like SuperBetter might be helpful. It's focused on really small tasks, such as, "Shake one person's hand." or "Count to 50 by 4s."