How much better it would have been could I have had my mind so thoroughly under control--and this control can surely be gained by any and every man, woman, and child that lives,--that, when worrying thoughts obtruded, I could have said immediately and with authoritative power: I will to think on this thing, or that, or the other.

The result would have been an immediate and perfect cessation of the worry that disturbed, fretted, and destroyed, for the mind would have become engaged with something that was beneficial and helpful.

And remember this: God is good, and it is His pleasure to help those who are seeking to help themselves.

Or to put it in a way that even our agnostic friends can receive, Nature is on the side of the man or woman who is seeking to live naturally, that is, rightly.
Hence, substitute good thoughts for the worrying thoughts and the latter will fade away as do the mist and fog before the morning sun.
Here, then, I had clearly demonstrated for myself the needlessness of worry: _I could prevent it if I would_.

And my readers cannot too soon gain this positive assurance.