When we find ourselves in one of these pre-harvest seasons we need to be fully engaged in that phase of the harvest cycle. In between harvest cycles, there is little we can do other than pray and wait upon the Lord. Since apparently we don't see anything major happening, we assume nothing is taking place. But the Holy Spirit needs to be trusted. He is the One at work behind the scenes. Kingdom work is done in seasons over time.
Prayer must accompany each phase in the harvest, but all the prayer in the world won´t speed up the process. If we are in the "watering" period it does little good to fret and cry out to God because we still haven't seen fruit from our labors. We have a hard time accepting that prayer doesn't seem to be able to accelerate or change the planting cycle!
We want Kingdom matters to operate on our time schedule and conform to our expectations. When they don't we anguish, pray harder, and maybe make adjustments to the way we are working thinking that the fault is with us. If we can just do things better, correct our errors, then we will see the longed for harvest.
Often what we need is to do less and trust God more. He is at work in the invisible world to bring about all of his plans and purposes. In His time he will bring about His Kingdom.
Does "waiting on the Lord" mean sitting around doing nothing while we wait for the Lord to act?
I personally feel we can do only so much within a given season of the harvest. If it is plowing season, we can plow. If it is planting time, we should be throwing everything we have into getting that seed into the ground. Same goes for watering, weeding, and bringing in the harvest. But beyond doing what we can in the current cycle before us, there isn't a whole lot more we can do. So why stress, fret, and allow ourselves to anguish over things we have no control over?
The following 4-min. "Frog and Toad" story expresses well what I believe Paul was saying to the Corinthians, "So then neither the one who plants nor the one who waters is anything, but God who causes the growth...for we are God's fellow-workers; you are God's field..."