In the famous beautiful 15th Chapter of John, Jesus says, "I am the Vine, ye are the branches: He that abideth in Me, and I in Him, the same bringeth forth much fruit, for without Me ye can do nothing! If a man abide not in Me, he is cast forth as a branch, and is withered; and men gather them, and cast them into the fire, and they are burned!" (Jn.15:5,6) If ever you, as a branch, don't abide in the Vine, don't abide in Christ, don't abide in His Love, His Word, His Service, then you will become unfruitful and withered, and you will be cast forth as a branch!--Not lost, not unsaved, but cast aside as being no longer useful.
Without the flow of God's Spirit there is no life. You must be firmly implanted in the Vine where you're receiving the spiritual sap and life and nourishment that you need directly from the Lord Himself.--And a lot of how you grow is up to you, by how much nourishment you receive! So don't cut yourself off from the Vine!
He said, "Without Me ye can do nothing." But if you are dwelling in the Vine, as one of the branches, then you can produce beautiful leaves and beautiful fruit so that He may be glorified and have much fruit!