2 Peter 1:4 New International Version (NIV)
4 Through these he has given us his very great and precious promises, so that through them you may participate in the divine nature, having escaped the corruption in the world caused by evil desires.
Another basic condition for prayer to be answered is praying according with the Word of God. This is closely intertwined with also being directed by the Holy Spirit. The most important part of prayer is the will of God. God hears you.
Dear Father, May I pray according to your will. May I work in tandem with the Holy Spirit when I pray. May I follow the promptings and help of the Holy Spirit. May I be directed by the Holy Spirit. Your will, Father, is revealed in your Word. Thank you. In Jesus’ Name I Pray, Amen.