I share the same problem. I use SelfControl on MacOS to block all the distracting sites. I've configured my computer at work to start SelfControl on a schedule

I share the same problem. I use SelfControl on MacOS to block all the distracting sites. I've configured my computer at work to start SelfControl on a schedule (9:00-18:00) so I have no choice over the block. Still though, there are a lot of distracting ideas that come up as I work: what should I do for dinner? What's my routine for the gym tonight? What's the weather? How's the stock market today? I've started using a pomodoro app to make me psychologically less inclined to paying attention to distracting ideas as I work. Admittedly, depending on the difficulty of the task, it works more or less. Part of the problem comes from not being completely motivated about my work. It's an issue that is hard to address, so I try to cope by increasing discipline.