Lloyd Jones on 'Little Faith'

It would not take the brightest among you to note that I am reading Martyn Lloyd Jones as part of my summer reading. His Studies in the Sermon on the Mount is a classic, a stunning read. Today I cam across the idea of 'little faith as expressed by our Lord in Matt. 6: 30. Those who worry, to Christ at least, are those of 'little faith.' Here are the Doctor's insightful thoughts on exactly what that is, I think they're incisive:
"What then is this condition which is described by our Lord as being ‘little faith’? … We can say … in general that it is one which is confined to one sphere of life only. It is faith that is confined solely to the question of the salvation of our souls, and it does not go beyond that. It does not extend to the whole of life and to everything in life. This is a common complaint among us as Christian people. On the question of the salvation of our souls we are perfectly clear … We have seen … that the only way of deliverance is in the Lord Jesus Christ … And we believe on Him, and have that saving faith with regard to the present and to all eternity. That is saving faith, the thing that makes us Christians, and without which we are not Christian at all. Yes; but Christian people often stop at that, and they seem to think that faith is something that applies only to that question of salvation. The result is, of course, that in their daily lives they are often defeated; in their ordinary lives there is very little difference to be seen between them and people who are not Christian. They become worried and anxious, and they conform to the world in so many respects. Their faith is something that is reserved only for their ultimate salvation, and they do not seem to have any faith with regard to the everyday affairs of life and living in this world. Our Lord is concerned about that very thing. These people have come to know God as their heavenly Father, and yet they are worried about food and drink and clothing. Their faith is confined; it is a little faith in that way; its scope is so curtailed and limited."

Studies in the Sermon on the Mount, ii, p. 127