Indeed, a person who lives in the exercise of faith and love, and who finds by experience that it is good for him to draw near to God, will not need to be told how often he must pray, any more than how often he must converse with an earthly friend. Those whom we love, we love to be much with. Love is the best casuist, and either resolves or prevents a thousand scruples and questions, which may perplex those who only serve God from principles of constraint and fear. A believer will account those his happiest days, when he has most leisure and most liberty of spirit for the exercise of prayer.
John Newton