I have this discussion alot, centered around this question, "how do I pray under the New Covenant." We must remember that in Christ we are complete, he has given us all things that pertain to life and godliness and all his promises are yes and amen. We are not asking God to give us something we don't already have in Christ. Prayer should be from the perspective to have our hearts and eyes enlightened to see and experience what is already ours in Christ.
List of in Christ, in Him Scriptures to establish your heart in your new creation identity in Christ
Use these passages as a tool for renewing your mind to the truth that you are seated with Christ in Heavenly places and He dwells within you in this Earth. Personalize these passages. See yourself through your new identity in Christ. Meditate on each one until you not only understand what they mean and you feel the associated emotions. While we don't live by emotions, we don't really believe a truth that we don't feel. Use these passages to become convinced of and confident in your new creation reality. All Scriptures are from the Amplified Version.