He has a talk on Ted:
And a website with some questionnaires:
To use Chris Farley, who unfortunately committed suicide due to depression, as an example I provide three typical phrases that he would use in his work:
Personal: I suck!
Pervasive: Everything sucks!
Permanent: It will always suck!
Please note that motivational speakers are typically all optimists and people who are unmotivated go to them for a "motivational fix" which lasts for about two weeks without optimism to back it. See also the typical person who starts a diet, exercise regimen or other self improvement plan.