If you are interested to increase your productivity, this will make wonders for you discipline: Deep Work book by Cal Newport

https://www.reddit.com/r/productivity/comments/g85g7p/deep_work_by_cal_newport/?utm_source=share&utm_medium=web2x

"The Deep Work Hypothesis: The ability to perform deep work is becoming increasingly rare at exactly

the same time it is becoming increasingly valuable in our economy. As a consequence, the few who

cultivate this skill, and then make it the core of their working life, will thrive."