Being able to do many things is more of a burden than a plus.One who is able to do many things often is plagued with over confidence and lack of focus. If your eye is single you'd see very clearly.

People who find they could excel in almost anything get so dis-oriented that they often do nothing in the end. Tragic. Of course, if the best eventually does not participate, someone less will be rated.

Is it possible to specialise in any of the many areas of IM and still make such fabulous incomes as is reputed to being made by marketers? Can sticking to one line of business not see one through?