If wisdom is walking according to God’s way, it deserves constant focus. “Sensible people keep their eyes glued on wisdom” Pr 17.24 NLT.
Self-discipline is, in large part, the capacity to say no, both to the bad and to the good, in order to dedicate oneself to the best.
We have focused our lives on the teachings of the Bible. Maintaining that focus enables us to remain close to God. In the process we are able to influence those we encounter in hopes they will turn to God.