Y Opportunity? Y not Opportunity?

A is for your Ambition to make an acronym.
C is for your Competence with words.
R is for your Responsibility to inspire these kids.
O is for Overestimating your abilities.
N is for Not using a thesaurus.
Y is for "Y, O God, did I think I could do this?" 
M is for Mediocrity, achieved.