“For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast.” (Ephesians 2:8-9)
Grace, salvation and faith are all gifts of God given to His elect. All three originate with Him, not us.
But you say, ‘Wait a minute! It is my faith! I had faith in God!’
You applied the faith God gave you. God gave you the power of faith. You put it into action.
“Every good gift and every perfect gift is from above, and cometh down from the Father of lights, with whom is no variableness, neither shadow of turning.” (James 1:17)