Always write your code as if...
There's a famous programming quote (and variations of it):
Always code as if the (person) who ends up maintaining your code will be a violent psychopath who knows where you live. Code for readability.
I believe it comes from this Google thread.
I'm currently working on some Drupal 7 code I first committed to in May 2014.
That person could also be you!
- Oliver
