On the broader point about flexibility:
I will end up eating the same meals every day and wearing the same short cycle of clothes (typically those the top of the pile). I go for meals which require the least time organization/preparation because I have a very real risk of going without eating until I am at crisis and absolutely have to do it if the item requires preparation. Things like nuts, yogurt, and canned goods are good for me because of these issues. If I'm eating at home, I'll typically stand and walk around while I eat.
I noticed eventually that I developed a habit of routine within the first 2 weeks of an alteration in living situation and changing that routine would become an enormous feat.
One time I didn't have the internet for a few weeks at a new place and would sit outside and think to pass the time. Even when I got the internet, I had difficulties breaking that pattern and would just keep sitting outside and thinking.
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We seldom realize, for example, that our most private thoughts and emotions are not actually our own. For we think in terms of languages and images which we did not invent, but which were given to us by our society - Alan Watts