Soft drinks fast
There are plenty of things one can use as a crutch for stress-relief: smoking, biting one’s nails, drinking alcohol, physical activity, phone use, betting, etc etc etc.
Something we had been indulging a bit too much in during the last month or two before Christmas was soft drinks; so, one of our side quests for the New Year was a month-long fast from them.
Like proper junkies, on the first day of February we broke the fast by going to Burger King - though, sadly, we found them to be not-so-tasty anymore…the challenge was achieved, the intended result too, and it was a good exercise for willpower