Fruitful Christians are like sail boats. God provides the wind and we are most effective when we align ourselves with Him, taking the course and making the tacks that keep us before His wind. We do best when we let Him keep his hand over ours on the tiller and when we keep ourselves clean of barnacles (sin and distractions) that can slow us down.
That doesn’t come easy or all at once. Strong wind blows over rough water and barnacles constantly try to attach themselves to us. But we get better at it dealing with those things the more we do so and, if we stay on course, we know the final destination will be well worth the effort.