Synopsis: Len's Star Rating: 9 out of 10. An excellent book on longevity.

Len's Star Rating: 4 out of 10. A self-help book on healthy living, written in 1996 from a Christian perspective.

Len's Star Rating: 7 out of 10. An encouraging book that primarily addresses complementary, natural strategies for improving mental health and depressive symptoms.

Len's Star Rating: 7 out of 10. A book that provides the backstory, rationale, and research that supports the X3, a muscle-building variable resistance system.

Len's Star Rating: 8 out of 10. A great workbook on acceptance and commitment strategies and exposure and response prevention for teens with OCD.

Len's Star Rating: 10 out of 10. An excellent, engaging self-help workbook on research-proven strategies for combatting OCD.

Len's Star Rating: 7 out of 10. A good workbook on behavioral activation strategies for combatting depression.

Len's Star Rating: 7 out of 10. A good book on behavioral activation and other life strategies for dealing with depression.

Len's Star Rating: 4 out of 10. A dated yet solid book on strategies and exercises for improving depression that includes an excellent chapter on behavioral activation strategies.

Len's Star Rating: 6 out of 10. A solid book on improving depressive symptoms through physical exercise.