A few months ago, I got hooked on a blog called the Daily Stoic. While the purest version of Stoicism might not be for everyone (including me), I have found a number of principles pretty valuable and actionable, both personally and professionally.
One in particular is based upon a quote from Marcus Aurelius, one of the fathers of Stoicism:
“The impediment to action advances action. What stands in the way becomes the way.”
The man behind the Daily Stoic, Ryan Holiday, expanded this thought into an entire book that I just finished reading. “The Obstacle is the Way” is great and I would highly recommend it.