Mel Robbins is an American lawyer, television host, author, and motivational speaker. She is author of many books, including one I love, called The 5 Second Rule.
She suffers from depression and anxiety and was diagnosed with ADD.
Dr Joe Dispenza, is a neurologist, biochemist an international lecturer, researcher, corporate consultant, author, and educator who has been invited to speak in more than 32 countries on five continents.
Here he talks about neuroplasticity and how neurons that are wired together, fire together - creating new neural pathways.
Scott Schwefel, a serial entrepreneur, works with organisations who want to leverage new communication strategies to increase sales, profits and productivity.
Your personality and your brain by Scott at TEDx Brookings.
I use another profiling called Warrior, Settler or Nomad however I also use this as another example as it's fun and easy to understand