Thanks @stevenmoses for bringing this up and i think we christian writer should adopt this method of posting and asking question at the end of it, thereby encouraging discussion which lead to more understanding of the word of God and gaining more insight. Thanks @hope777 for blazing the trail.

Now to answer your question

1- we are to pray always. There is no required number of time to pray neither is there a duration for prayer. As a follower of Jesus Christ we admonished in 1 Thessalonian 5 vs 17 which says "pray without ceasing". Going further let take a look at luke 18 vs 1 - 8, the judge and the woman parable of our Lord Jesus Christ. In that verse our Lord Jesus buttress the importance of praying without ceasing.

Now to answer number 2 and 3 question. The answer lie in the Lord's prayer. Which goes thus
“Therefore do not be like them. For your Father knows the things you have need of before you ask Him. In this manner, therefore, pray: Our Father in heaven, Hallowed be Your name. Your kingdom come. Your will be done On earth as it is in heaven. And forgive us our debts, As we forgive our debtors. And do not lead us into temptation, But deliver us from the evil one. For Yours is the kingdom and the power and the glory forever. Amen. “For if you forgive men their trespasses, your heavenly Father will also forgive you. But if you do not forgive men their trespasses, neither will your Father forgive your trespasses.
Matthew 6:8‭-‬10‭, ‬12‭-‬15 NKJV
http://bible.com/114/mat.6.8-15.NKJV.

Now what make God answer our prayer. It is not enough to pray in faith and with faith but we must also pray according to the will of God and the will of God for us is to seek His kingdom thats why our Lord Jesus start by saying " Our Father in heaven, Hallowed be Your name. Your kingdom come. Your will be done On earth as it is in heaven. the second is when we go to God let go to Him with a clean heart bearing love not hatred towards our fellow man and woman. For the word of God made us to understand that the prayer of a sinner is an abomination unto God. Sin here compasses many thing, hatred is just one of them, so also is unforgiveness, gossiping, backbiting, lieing and so many innocent act we try to categories as small or little sin and believe they have no effect in our relationship with God.

When Jesus speak, He speak of what our Father in heaven says to Him in other word the Lord's prayer is a perfect template to use in praying prayer answering prayers.

Our Lord Jesus did not start with give us daily bread but instead He start by exhorting The name of The Lord, He went further by praying for the establishment of God's kingdom here on earth then a prayer forgiveness of sin. Praying a God kingdom establishment prayer will lead to your prayer being answer.

Now to fully answer number 2- kingdom establishment focus prayer, a clean hand and clean heart which mean repented soul.

Number 3 - A perfect prayer is one that is pray according to the will of God or word of God and when you pray according to the word of God, God will no choice but to answer you because He honour His word above His name. Psalm 138 vs 2.