Focus can be accomplished by shifting consciousness in which you bring order to tasks that you do (sometimes daily) and can bring pleasure to your life, thus satisfaction and it called flow.
I'm surprised nobody has mention one-tab extension, you can save any number of tabs and it is possible to give the collections of tabs unique name according to use-case. Please check https://www.one-tab.com/
> Please read Flow ... https://www.amazon.com/Flow-Psychology-Experience-Perennial-...