I sometimes take modafinil before starting a day of work. So far there hasn't been a single instance where I did that and didn't get sidetracked thinking up a

I sometimes take modafinil before starting a day of work. So far there hasn't been a single instance where I did that and didn't get sidetracked thinking up a new software project I could start using technologies I barely understand to solve a problem I just learned about. The upside is you're a lot more focused, so you can get a lot done. The downside is it's really easy to nerd-snipe yourself, and the increased focus means it's hard to stop thinking about whatever problem caught your attention.