Consistency
It’s (relatively) easy to be consistent with my routine when life is stable. As soon as I start travelling though, or when there’s a lot of social activity, the routine tends to fall apart, to certain extent. After returning from a trip it takes about a week to bring the life to order. This is also when I tend to slip back into bad habits.
At the same time I feel somewhat heroic when I succeed in keeping my routine during trips (brushing teeth, skincare, exercise, taking vitamins.)