When you have an encounter with god you become a new creation.
Jacob in the Bible wrestled with God and prevailed. We can come to a place where we are able to prevail with God and our prayers are answered.
To do this, we must walk in faith and pray in faith.
God rewards those who seek Him diligently.
Secondly, we must pray in the will of God.
The best way to do this is to pray a positional pattern of prayer or to pray in the Holy Ghost.