"Whoever believes in me, as Scripture says, rivers of living of water will flow from within them." Jn 7:38
It is not us, or our works will issue out this living water. It was very clear, believe first that "God sent His Only Begotten Son into the world so that whoever believes in Him will have eternal life." (Jn 3:16).
Do not worry too much about the need to do everything in your own power. Just believe and abide in Lord Jesus, as the Heavenly Father in Scriptures. All are vanity! There is no way to the Father except through Jesus Christ alone. When one truly believes in his heart, then oases of living water will flow from within him. Why? The reason is when we believe in what the Heavenly Father says, the barrier of the original sin is broken in our baptism. The Lord lives in us, in our hearts and in our souls. When the Lord is present in our life, the well of living water flows unending and generously.
How? Let us not ask this question! There is no how with the Lord. Nothing is impossible for him. What seems unreal and difficult is nothing. Just like when Sarah doubted that she is going to bear a son, God Almighty said, "Is there anything too wonderful for the Lord?" Nothing! God Almighty is the Author of everything, the Ruler of Everything!
There is only one thing asked of us and do we need to complain? Let us pray that God will open all of our hearts to receive this wonderful gift of living water. Thank you Lord! In Jesus, Mary, Joseph and all of angels and saints, Amen.