- Editing your /etc/hosts to block the worst offending sites that offer no real value

- Using tools that augment sites that are distracting but can be useful (e.g. YouTube)[1]

- Using website blockers - I made one that uses AI to recognise what is and isn't on task [2]

- For me the single biggest thing is changing my physical environment for better habits. E.g. coffee shops and coworking spaces aren't the best for focused work but they at least make me more consciously aware that I should be working and not wasting time on distractions. Obviously you are in an office this may be difficult to change though.

[1] - https://chrome.google.com/webstore/detail/mindfultube-youtub...

[2] - https://chrome.google.com/webstore/detail/deepmode-intellige...