Quoting shamelessly from https://blogs.ams.org/inclusionexclusion/2019/06/26/living-proof-a-must-read/:
The AMS and MAA have recently published a phenomenal collection of essays entitled “Living Proof: Stories of Resilience Along the Mathematical Journey”, edited by Allison K. Henrich, Emille D. Lawrence, Matthew A. Pons, and David G. Taylor. The book is free, and features an astounding group of contributing authors. The stories are organized around common themes in the experiences. Part I is about math getting hard and people hitting a wall. Part II is about struggling to belong in math (and is particularly well aligned with the goals of this blog). Part III is about persevering through and overcoming difficulties. And Part IV is about the sometimes challenge of integrating our mathematical identities with the rest of our lives.
I’ve read this compendium of 41 two- and three-page essays myself, and I highly recommend it as a way of encouraging young mathematician to persist along the journey.
Mean Green Math 