Cynicism can keep unbelievers from submitting to God and receiving new life. But cynicism can also be a barrier for those who are saved, keeping us from fully trusting God and submitting to his leading. So we have to be aggressive at rooting out cynicism.
If you doubt the goodness of God, don't kick the can down the road. Don't put it off. Deal with it now! Respond to yourself in a rational, prayerful, logical, urgent way.
You can know something about a person, their biography, greatest achievements, famous sayings...but still be a stranger to them. Real relationships require something more. Presence. Pursuit. A genuine willingness to close the distance.
If you want to pursue a deeper relationship with God, be sure to request the book The Pursuit of God by A. W. Tozer.