"When he [Jesus] had thus spoken, he spat on the ground and made clay of the spittle and he anointed the eyes of the bind man with the clay and said unto him, Go, wash in the pool of Siloam, [which is by interpretation, Sent.] He went his way therefore and washed and came seeing.
John 9:6,7

Jesus asked this man to act his faith by going and wash. We must not do something just because it worked for someone else, but let God show us what to do or how to act in faith.

That we know of, Jesus didn't tell anyone else to go dip in that pool. He gave people a variety of instructions for acting their faith.

We are not to try  to make something happen instead of acting because we believe God has already healed us.

We must let God teach us what we need to do to act in obedience to His word and to receive by faith.