Deletion of Abundance mentality

Comment: SS, I removed Ms. Tremblay's website as an unreliable source, so at least that's not a concern anymore.  There do seem to be a lot of references in the business buzzword press, and it may be linked to the 7 Habits of Highly Effective People.  I'll add a couple references.  May still qualify for a merge somewhere based on #DICTIONARY
Stance: keep
Cited policy: Wikipedia:What Wikipedia is not (WP:NOT)