IF quotes are from Amy Carmichael, who was a Protestant Christian missionary that served in India for 55 years without furlough and wrote many books about the missionary work there.
While reading Arthur T. Pierson's biography of George Mueller I just have to share an excerpt from that book. I trust the Holy Spirit will show you the importance of this.
"He saw that the so-called 'work of the Lord' had tempted him to substitute action for meditation and communion. He had neglected that 'still hour' with God which supplies to spiritual life alike its breath and its bread. No lesson is more important for us to learn, yet how slow are we to learn it: that for the lack of habitual seasons set apart for devout meditation upon the word of God and for prayer, nothing else will compensate.
"We are prone to think, for example, that converse with Christian brethren, and the general round of Christian activity, especially when we are much busied with preaching the Word and visits to inquiring or needy souls, make up for the loss of aloneness with God in the secret place. We hurry to a public service with but a few minutes of private prayer, allowing precious time to be absorbed in social pleasures, restrained from withdrawing from others by a false delicacy, when to excuse ourselves for needful communion with God and His word would have been perhaps the best witness possible to those whose company was holding us unduly! How often we rush from one public engagement to another without any proper interval for renewing our strength in waiting on the Lord, as though God cared more for the quantity than the quality of our service!"
These thoughts have inspired me more than a ton of sermons! Getting alone with God and spending time, much time with Him, as been more important to me than all the other activities of my ministry combined! I'm at a loss for words, wisdom, and effectiveness in my work when I neglect precious time with Jesus. May God literally break my body if that is what is necessary to bring me to His throne for my necessary strength for any effective ministry!