When I was reading the remote researcher submissions on the psychology of habit formation, I noted that trying to form a habit after a disruptive life-change like moving somewhere was considered one of the best times to do so by the researchers. I merely noted it down for later thought since I wasn't planning to move anywhere.

Unexpectedly, I moved down to Maryland a few weeks ago, and my dentist the day before the move strongly urged me (on account of various worrisome regions on my teeth) to start brushing twice a day, flossing, and using fluoride mouthwash. I can't do that! I thought, especially with the chaos and disruption of a move! But I decided to give it a try anyway - since it matched the literature recommendations exactly. And I've managed to do all 3 every day since.

Who knew that sometimes psychology could be right and practical?

Dental floss is not expensive. Why not buy many rolls? I have one in my work drawer, one on my desk at home and one in the bathroom.

I wish I could say this was motivated by clever psychological foresight. In fact, I routinely buy duplicates of consumables like dental floss, deodorant, sticking plasters, painkillers, etc., because I forget where I put the ones I already have. It actually works out quite well.