"You can get fired for your potential"

I heard this said by a sports announcer and it stuck with me. Presumably it means that you were hired and a salary was set according to your potential. You can't then perform and rate yourself in comparison to others. You can't get by because you aren't failing or just because you are playing. It got me to thinking about the spiritual implications of that. God knows what we are capable of. It doesn't matter where you've been or what you've been through or how old you are, there is no excuse that will suffice because He knows. When you stand at the judgment seat and He asks you why you didn't give it your all, what excuse could possibly hold up?