Man's Search for Meaning — Viktor Frankl (1946)

Man's Search for Meaning has sold over 10 million copies globally, making it the third-most influential psychological memoir behind 'Atomic Habits'. Viktor Frankl's logotherapy, forged in Auschwitz, posits that meaning sustains life even under extreme suffering — a claim backed by a 2020 meta-analysis of 40 studies showing purpose reduces mortality risk by 17%. It is 25% shorter than the average self-development book at 160 pages, yet its core idea — the freedom to choose one's attitude — remains unmatched in depth.