Ezra made a profound impact in Nehemiah 8. He took what was given him via moses and so on and put it to the best use he new how.
Matthew 28:19 is clear on what it wants us to do. We are given every tool possible to fulfill this including but not limited to tongue, ears, feet, arms, eyes, heart, and thousands of other internal organs to assist.
Ezra started a revolution with the same tools as we. When he stood and read just the law of moses hundreds if not thousands stood in awe becasue he had made the word of God look as it was intended.
Practical application consist of simply taking what you have gifts, possesions, yourself, ect and allowing those things to be expendible for him. Thats what it takes!