Productive mental models

[jennybc]

Re: the intersection of habits/psychology and technical progress.

Integrate and beef up these ideas from current slides into bookdown:

• if it hurts, do it more often
• let go of the idea that your setup will ever be "done"; maintenance and staying current is an ongoing activity, where the timescale and acceptable risk varies by person/project
• find ways to make and lock in incremental progress, move from one successful position to the next; reduce size & direction of incremental change until this is possible