We should desire to mature in our prayer life. In the natural our speech should mature (some people take longer than others) from child to teen to adult. Even as an adult, one that has gone through various tribulations of life mature faster (Rom 5:3)

As the disciples ask Jesus to teach them how to pray (Luke 11:1), it is wise that we do the same. After all it should be our desire to ask Him whom we are praying to, to show us what's in His heart with regard to prayer.

Jas 4:3 Ye ask, and receive not, because ye ask amiss, that ye may consume it upon your lusts.

In other words, learn to ask His will. Jesus in Matt 6 mentioned 'knoweth what things ye have need of' a number of times. We learn to ask with a quiet confidence that He has heard enough to answer, lest our prayers become vain repetitions.

Our fullness of joy in answered prayer is in asking in His Name (John 16:24). If we ask in His name, we also ask in His approval. Thus asking in His will. Casting our life into His will as Jesus did at Gethsemane where the ultimate power of God is endued on us to go through the cross we carry (Luke 9:23) which in dying to our self lust and ambition, brings forth Kingdom life where heavens open and God's pleasing is upon us.