John Newton is famous for his letters and I think any pastor should own a copy of them. Driving yesterday I listened to this talk called 'The principle of Christian growth' and in it three stages (among many more) were identified. Three letters John Newton wrote expand on these stages which may be worth taking some time out to read and reflect upon.
Grace in the blade, the ear and the full head of corn.
What stage are you at?
Do you have a plan for growth?