
The Seven Habits of Highly Effective People by Stephen Covey is probably the book that had the most overall impact on my life. Other impactful books mostly touched my professional life. This one not only did that, but also changed my life outside of work. It impacted my character.

Raise your hand if you have been in the following situation. A colleague comes to your desk (or nowadays: they call you on zoom) to discuss something. You are busy. You quickly open the Calendar to find a time slot for a meeting. Unfortunately, you have no time right now and are also fully booked in the next days. Thus, you schedule a meeting in two weeks. Right before switching to the Calendar, you were able to catch a very brief glimpse of your e-mail inbox with the approximately 700 flagged or otherwise highlighted items that still need to be taken care of.