1) Neurosis and Human Growth
Of all of Karen Horney’s works, my top recommendation, by far, is “Neurosis and Human Growth” (1950), published near the end of her life. Her earlier works, such as “Self-Analysis” (1942) and “Our Inner Conflicts” (1945), are only significant for showing the development of Horney’s thought and research before reaching the pinnacle of “Neurosis and Human Growth.” For the average person, or someone with mental health issues, they are not particularly worth reading compared to “Neurosis and Human Growth.”
Conversely, “Neurosis and Human Growth” is essential reading because it deepens, expands, and integrates the content of her earlier works.
Of all of Horney’s works, “Neurosis and Human Growth” should be the first one you read.
Neurosis and Human Growth: The Struggle Towards Self-Realization (Norton, 1950）
Amazon.com link
There have been two Japanese translations of this work, but unfortunately, both are out of print. They may still be available in libraries, etc.
Translation 1: The Struggle for Self-Realization: Neurosis and Human Development (translated by Mihoko Fujisawa and Yukiko Tsushima, Academia Publishing) (1980)
Translation 2: The Collected Works of Horney, Volume 6, Neurosis and Human Development (translated by Yuzuru Enomoto and Tatsuro Tanji, Seishin Shobo) (1988)
2) A Mind of Her Own: The Life of Karen Horney (by Susan Quinn, 1988)
This is an excellent biography of Karen Horney by Susan Quinn.
It provides a detailed description of Horney’s life and the development of her research, offering a comprehensive understanding of her life.
It appears that a Japanese translation has never been published.