Catechesis

But instead He draws us to Himself, so that we might humble ourselves before Him, bewail this misery and plight of ours, and pray for grace and help. (LC III:11)

You should say, "My prayer is as precious, holy, and pleasing to God as that of St. Paul or the most holy saints." This is the reason: I will gladly grant that Paul is personally more holy, but that's not because of the commandment. God does not consider prayer because of the person, but because of His Word and obedience to it. For I rest my prayer on the same commandment on which all the saints rest their prayer. (LC III:16)

No one thought about any need. But when they had done their best they thought no further than this: To do a good work, by which they might repay God. They were unwilling to take anything from Him, but only wished to give Him something. (LC III:25)

We need to know this: all our shelter and protection rest in prayer alone. (LC III:30)

[Basic outline: We are to ground our prayer on obedience to God's command, trusting His promise, and thankfully making use of the words Christ has taught us]