Leaving your mother and father to follow Jesus means to turn away from the generational curse of sin.  It is widely known today, that children model their parents.  As we age, we realize that we modeled our parents even when we swore that we would not.  As a baby, the first person you see and know to depend on is a parent.  Even if your parents are Christian, they are likely to in the process of being sanctified by the Lord.  That is to say they still  draw on the independent self as their source rather than the Lord in many areas of their lives.

To honour your mother and father, simply put, means to accept and respect them.  Overcoming dishonouring of parents will set you free of repeating the pattern and enable you to have loving relationships.  With the Lords help, you will come to a place where you can accept your parents as they are, forgive them, and repent of any self centered characteristics you modeled.  If we cannot accept our parents as they are, we cannot accept ourselves as we are.  And if we cannot accept ourselves as we are, we will strive to be better instead of allowing Jesus to change us.

The first step is to switch your dependence for love and approval from man to God.  Focus on Jesus.  That is the leaving your parents piece.

The second step is to forgive.  This can be a process. The forgiveness must come from the heart.  Sometimes we think we've forgiven when we really haven't, because our worldly understanding of this is conditional.  So examine your heart for a sense of warmth and peace.  This is the fruit of unconditional forgiveness, that which will set you free.  If you find anger, apathy or hurt, continue to pray for the necessary revelation to attain true forgiveness.  If you catch yourself wanting to change something in them so you can forgive, keep praying.  Pray for what needs to change in you.  It's all about you... you and your relationship with God... to be able to serve God over self.  All else will be given unto you.