How Should I Pray?

We don't always know how to pray as we ought. We know essentially what to pray and when to pray but we don't always know how to pray.
A friend might come up to you and ask you to pray for their sick grandfather in the hospital, but you don't know what to pray for exactly. When we pray for someone we must understand that even though we don't know what God wants for this man we can still pray what's on our heart. We don't know if God wants him to be healed or if God wants to take him now. We know by scripture that we should pray for their salvation if they are not yet saved. God makes the call on who will be saved. Scripture says that God's will is for everyone to be saved. But that is not the case for everyone.  In Romans chapter 8, verse 9, Paul writes, "Anyone who does not have the Spirit of Christ does not belong to him." Man's heart does not seek the Lord. The Lord must pull us toward Him. It is all by God's power to save an individual. Not everyone will be saved because man's heart is carnal and dark and he might never see God's grace because of the constant fight against the light. It is up to the Holy Spirit to break a person and to humble them until they submit to the Lord. As thereof, we should pray for the person or someone to gracefully and lovingly speak to them in hope that their heart is touched by the Holy Spirit and opens up to the will of God—that is for them not to perish.
We don't know the purposes of God concerning death. His ways are not our ways. We don't know what to pray—in that—what should be the outcome. We know what scripture lays out for us in what to pray. But we don't know for what outcome to pray.
In light of what I just mentioned, I believe the best way to pray is to ask God for His will and purpose and to leave the final answer to Him. Pray what's on your heart then leave it up to the Lord. Lay it rest in Him.