Mastery by Robert Greene

The learning process is naturally filled with failure as a feedback mechanism to help you optimize your efforts towards more success over time. As a PM, there are many variables that you will learn to deal with that push back on your success rate. Thus, learning to accept failure and use it to inform better strategies and insights over time is how you win in the long run.

Read more on Mastery and how I apply it in this blog post: Mastery and the learning process