The Gifted Adult: A Revolutionary Guide for Liberating Everyday Genius
A classic book for adults who discovered giftedness late in life. It is particularly good at describing the experience of feeling different and at helping readers connect high ability with patterns such as intensity, underachievement and self-doubt. Some of its theoretical references are now dated, so I see it as an excellent experiential starting point rather than the most up-to-date scientific overview.
Its strength is that it turns giftedness into a question of how to live, not simply how to score on a test.






