The Core Confidence Life is a personal development and education service. We provide motivated millennial men and others with ways and skills to break the cycle of anxiety and inner limitations so they can achieve the relationships, pleasure and prosperity they desire.

Founded in New York City in 2014 by Dennis R Sumlin, a Confidence/Mindset specialist, Core Confidence Life’s mission is To inspire, Support and Promote holistic based principles to enhance the personal success of every man. We aim to create a world of compassionate, confident and conscious leaders and mentors.

We provide one-on-one as well as group classes and mentoring programs as well as educational podcasts and articles on:

  • Public Speaking/Communication
  • Developing goals and values
  • Self-awareness/Self-Image
  • Relationships and Sexual Fulfillment
  • Holistic Spirituality

All humans have limitless natural talents and abilities, and we help you locate and unleash them into the world.


People we have worked with

Along with one-on-one and group classes, we have also worked with other schools and organizations. Educational institutions such as The Door (New York), International Christian University, and The City College of New York have been just some of our collaborations.

How to contact

If you have any questions, we would love to hear from you.


Dennis R Sumlin teaching a class at CCNY