Focus on high-value tasks to work effectively

The key insight is that regardless of the seniority of a role, it can be performed in either 12 hours a day or in four hours a day while still delivering the same results. By focusing on the right tasks with the highest value to the company, individuals can complete their job in three to four hours a day. This approach allows individuals to use their remaining time for personal development, writing books, and pursuing other projects, all while surpassing the company's expectations. The speaker emphasizes that engaging in tasks that merely look good but lack significant value can lead to inefficiency and ineffectiveness, ultimately highlighting the importance of doing the right job over the job that appears favorable.