1. Be Proactive:   One of the key takeaways from the book is the importance of being proactive. Covey emphasizes the role we can play in determining our reactions to external events. We have the freedom to choose our response to situations, paving the path of our lives proactively.

2. Begin with the End in Mind:   Covey urges us to visualize our final goals and begin our journey with those in mind. This approach will provide a clear direction for all our efforts.

3. Put First Things First:   Crucial tasks and actions must be prioritized first. This allows for efficient time management and the ability to distinguish between the vital tasks and the merely urgent ones.

4. Think Win-Win:   This is a lesson in empathy and understanding. Covey suggests that we aim for solutions that are mutually beneficial and satisfy all parties in any interaction or negotiation.

5. Seek First to Understand, Then to be Understood:   Listening is as important as being heard. Thus, Covey suggests that we prioritize understanding others first, before seeking to have our viewpoints understood.

6. Synergize:   Covey introduces the concept of synergy, where the combined effort of a team is greater than the sum of individual efforts. This lesson emphasizes the importance of teamwork and collaboration.

7. Sharpen the Saw:   Regular self-renewal and improvement are crucial for persistent effectiveness. This could range from physical exercise and diet to spiritual and mental refreshment.

8. Internalize Principles:   Another significant teaching from the book is to internalize principles of honesty, integrity, fairness, etc. These principles form a solid foundation for our lives.

9. Personal Leadership:   Covey emphasizes that personal leadership is essential to personal and professional effectiveness. This means leading oneself towards what one wants to achieve.

10. Personal Management:   The idea is to organize and execute around personal priorities. Covey suggests that a matrix tool could be used for determining matters that are important in the long run and those which seem urgent to us.