Success, like beauty, is in the eye of the beholder, so you must consider the point of view as well. An EVP who never reaches his/her goal of CEO may feel less successful than a career middle manager who is able to spend enough time with his/her family.
Some define success internally, and others depend on external perceptions. The lucky few achieve it at both levels, but for many, internal and external success may not be compatible.
In general, I think successful people do 2 things: set priorities and continually act on them. Whatever you're chasing in life, just make sure you understand why you're chasing it before you worry about the best way to catch it.