1. in such a manner that the inner surface becomes the outer e.g. he turned the shirt inside out
2. thoroughly e.g. he knows the subject inside out
3. in a state of disarray or chaos e.g. he turned the business inside out
However, it is not clear to me as to under which context the author is using the phrase 'inside out'.
Let us encourage each other in sharing knowledge.
I think this is what the author is referring to but in a more philosophical, personal and motivational way.
If one were to succeed in life, we should learn to harness the energy that is inside us and channel it meaningfully instead of relying on help from outside.