Here is a little snippet from John Maxwell on lasting Leadership.
Leaders That Last…
develop personal discipline.
put their confidence in God.
keep the value of material possessions in perspective.
recognize the danger of becoming a slave to pleasure.
seek and refresh God’s vision for their lives.
This comes from John Maxwell’s little book The Right to Lead and while it is targeted towards leadership, it is just as applicable for anyone who is working towards success, both to help them along the way and to help them as they succeed.