Where should prayer leave us? In the same place? Justified? No. No.
Less burdened and fearful, more grateful, more humble before our God, less material in our desires. Yes to all of these.
In prayer, we enter into the secret place of the most high where the senses are quieted, and we commune with Spirit, laying our desires at His feet, and then moving on to acknowledging His perfection and goodness.
This way we always benefit from prayer and are not caught up in looking to get what we want. "Not my will, but Thy will be done" is safe state to be and brings great blessing.