Karen1 There is a recent study that shows that people who "give up" on things that are not their forte are actually more successful in the long run ...
That is roughly what John Maxwell advocates.

He said, don't spend a lot of time on things you have trouble with. It is more productive to spend time on the things you do well.
In his book "The 21 Indispensable Qualities of a Leader"
http://books.google.com/books?id=EcAoAAAACAAJ&dq=inauthor:John+inauthor:C+inauthor:Maxwell

Lou