Are we really at the point where a 30 year old can offer sage advice on living life? Wow. As a counterpoint to "be the best you can be in your profession": https://www.youtube.com/watch?v=hIJdFxYlEKE [PyCon keynote by Jacob Kaplan-Moss on 'mediocre developers'].
Plus 20 (and 30 somethings) would rather here from a determined successful peer, than someone far older.