Nothing good will come from prayerlessness. But prayerfulness cannot fail but bring only good. The reason? The law of sowing and reaping.
Do not be deceived: God cannot be mocked. A man reaps what he sows. —
Gal. 6:7 NIV.
Most often, this verse is applied negatively, that is, as a warning against sin. You will accrue some bad consequences, a curse, if you persist in willful sin. But the positive applies too. If you practice Bible study, church attendance, etc., then you cannot fail to attain blessings.
If you sow prayers, then you WILL UNFAILINGLY reap answers.
Don’t give up prematurely on farming. It takes work, time, care. It wouldn’t be wise to walk away from the crop before it grows to maturity. A harvest on an actual farm has its established growth period (months for quick-turn-around crops, years in the case of some fruit trees). But we don’t know the maturation date of most of our prayer requests; only God knows that. So hang in there and don’t abandon the harvest! Keep praying!