When you can’t ask in faith, it is usually because you have not dwelt enough with the thought of God, the divine self of all creation.
When we dwell much in the thought of our personality, things, “materiality”, then God seems faint and far away and impotent, and we can’t believe we shall receive what we ask.
We need daily periods of withdrawing from the physical life and dwelling upon the thought of our oneness with omniscience, omnipotence, omnipresence and our oneness with each other. Thus does faith grow.
From Life Power and How To Use It by Elizabeth Towne