One of the most impressive and lesser-known books I can recommend is Five Quarters of an Orange by Joanne Harris. A very unusual book. For the sake of this book, I even decided to find dissertation topics for mba, I used https://papersowl.com/blog/human... for this. I noticed that books always come first for me, even if the choice is before studying at the university. I won’t even think about what to choose here.
The most impactful book I've ever read is "Man's Search for Meaning" by Viktor E. Frankl. It profoundly explores the strength of the human spirit in the face of unimaginable adversity.