Self's success can be hard to define. Apart from his first season, KU has won at least a share of the Big 12 title every year he has been coach, and pretty much dominated the league. However, during that span Self's teams have made only one Final 4, where they beat North Carolina and later Memphis to win the national title.
The counter argument to defending Self can be found in Michigan State's Tom Izzo. In Izzo's 15 seasons coaching the Spartans, his teams have six Final 4 appearances. However, like Self, he has one national title.