There is a common theme linking these studies this topic comes from the depth and diversity and richness of human nature from the side, and the other side also stems from humans and worthlessness in this nature.
In this book by Rollo May discusses some of the characteristics of human nature and human under the title of "problematic".

What the award-winning Boundaries has done for adult relationships, Boundaries with Kids will do for you and your children Here is the help you need for raising your kids to take responsibility for their actions, attitudes, and emotions. Drs. Henry Cloud and John Townsend take you through the ins and outs of instilling the kind of character in your children that will help them lead balanced,..

Boundaries with Kids will help you: Recognize the boundary issues underlying child behavior problems Set boundaries and establish consequences with your kids Get out of the "nagging" trap Stop controlling your kids—and instead help them develop self-control Apply the ten laws of boundaries to parenting Take six ...

Man's Search for Himself by Rollo May is a captivating and introspective guide that is a perfect fit for readers seeking a deeper understanding of themselves and their place in the world, particularly those grappling with anxiety, depression, and feelings of emptiness who are looking for a nuanced and insightful exploration of the human condition.