My human brain isn’t great at remembering, and it’s not great at keeping track of things in a structured way (there’s probably a bit of ADD in there). To get around this, I externalize information that would otherwise live in my brain. In particular:

• Financial information
  • Budgeting using YNAB
  • Finance tracking using beancount
  • Lending and borrowing: implementation
• Notes in Bear

See also: List of external textual DSLs