Another thing you could do is keep two different logins in your laptop. One as a work profile in which you only work and another as an entertainment profile. So

Another thing you could do is keep two different logins in your laptop. One as a work profile in which you only work and another as an entertainment profile. So when you log in to your work profile, that becomes a ritual for you to get into work mode and browser new tabs and the title bar don't give you suggestions that can distract you. (Though hacker news falls into both for me and trips me)