I just spent the last week reconciling my books, using my scores of Excel files as a source, moving them to ledger.

I learned rudimentary double-entry accounting in high school, and I love that ledger enforces it so that I can be strict about my tracking. I still have to figure out how to produce balance sheets and income statements so that I can confirm that my accounts are balanced correctly. Honestly wish I had done this sooner.

Edit: Looking at beancount again, I should just use that instead of ledger. Ledger's simple, elegant, and nice, but I'm a Python guy, and I should just use what I know.