While moving a dressing-table I had a thunderous revelation, the kind that can change you life: you cannot walk backwards in slippers.
At least not the back-less kind. Think about it! (this is REALLY deep)
We should always wear slippers. Not only would that be the end of lots of problems with callouses and ingrown-toenails and stuff like that, but it would keep us always in the right track and the correct frame of mind to leave the dastardly past and our regrets behind.
PS: If you are addicted to high heels, you can always wear mules.