My favorite prayer (for myself)
. . . asking to be grown . . . into the capacity required to meet my challenge/attain my desire.
Essentially I am saying:
Expand in me, so that I am grown to the capacity necessary to deal with this thing in my life . . .
Or if for a fervent wish . . .
Expand in me, so that I am grown to the capacity necessary to create this thing in my life . . .