While they took different approaches in their lives – i.e esoterics and psychology – quite many connections can be made between the two.
One obvious common thing is the idea of responsibility that is a cornerstone for both authors.
Castaneda says that in order to be efficient you need to take on responsibility for your own life and accept the fate as it is. This is the difference between a warrior and an average man.
Frankl in essence tells the same. Responsibility, together with freedom and spirituality, is a pillar of human existence.
No matter which approach or tradition we may prefer, both of them share the same profound point. We are the ones who are responsible for our lives. And if we want to have things we’ve never had, we must do things we’ve never done.
Other posts on Viktor Frank’s Man’s Search for Meaning:
The Pillars Of Human Existence: Spirituality, Freedom and Responsibility
Three Types of Values That Make Life Meaningful
Where Space for Growth Lies
Death Makes Life Meaningful
Heredity And Environment Vs. Will and Action
Knowledge Vs. Wisdom