I very much like the analogy with farming and how you can avoid depleting your mental energy if you adhere to strict schedules and routines. The “if … then” principle is also useful to understand and apply.
Of course, this does not mean that you should reduce your life so as to have no options at all. In fact, one important facet of my job is to help people create more options for themselves as it gives them flexibility and a chance to move away from unresourceful states.
I see this as putting the necessary amount of structure and routine so that you can unleash your creative powers!