Prayer is an essential part of a relationship with Jesus Christ. Through prayer we are able to communitcate with Him about our situation whether it be gratitudes to Him or needs we may have. We have a direct line to God the Father through Jesus Christ and a tool to access that is by praying.
The model prayer was shown by Jesus to the disciples in Matthew 6: 5-13. We are to use this a blueprint to our prayers.
Praying the scriptures is great tool to use also. The book of Psalms is a collection of songs to the Lord that glorify Him. Praying the scriptures allows us to use God's Word to direct our thoughts back to Him, so we don't default back to repetitive prayers. In the book 'Praying the Bible' by Donald Whitney, one is able to learn more about the benefits of praying scripture.