Repeat ones prayers doesn't make it anymore more effective. We were told in Scriptures to avoid vain repetition.

Most times the reason why people keep repeating their prayers is because they have lost ideas on what to next to pray for. They just want to make up for time and lose out in the end.

I once read from an apostle of faith called Smith Wigglesworth. He said something profound. He said if you had to pray to God seven times before you got to the answer to your prayers, it meant that you asked six times in unbelief.

Jesus Christ also said in the Bible that when you pray, believe you have received the petition that you asked and you will receive it.

This means that when we pray, there should be the believe in our heart that God hears us and has granted our petition.

That's why it is important to pray in tongues. When we pray in tongues, we pray the right way.

It's very effective as in doing so, the Spirit of God prays through us. There can be no vain repetition with praying in tongues.

When we pray in tongues, we have direct connection with God's spirit. This so because the Spirit searches the deep things of God. (Romans 8:27).

Praying in tongues is the cure for vain repetition.