Just doing my company accounts. Every year, I put off doing it for six months because of The Fear, then it takes about 2 hours in total, and I enjoy doing it.

In January, it'll be 20 years since we set up the limited company. Our first accountant was pretty old school, and the company had few enough transactions that financial software was overkill, so I set up a basic spreadsheet. I'm still using a copy of that spreadsheet now. If it ain't broke...