Luke 17:5The apostles said to the Lord, “Increase our faith!”6And the Lord said, “If you had faith like a mustard seed, you would say to this mulberry tree, ‘Be uprooted and be planted in the sea’; and it would obey you.
A measure of faith...yes...even the size of a mustard seed can uproot a tree and plant it in the sea. It can move God to action in our lives...if we will believe that it can happen.
That faith goes hand in hand with the working of the Holy Spirit. It's the working of the Spirit that increases when we believe with that faith.
So yes, it starts with a measure of faith that God gifts us with....and yes, some people are gifted with "more" faith than others. How much more will God's Spirit move in that person's life if they believe it is possible? Different levels of faith, different levels of the Holy Spirit working within us. That's what I meant by using those terms.