One of the main keys to success in any arena of life - is improving yourself. If you want your business to grow - improve your knowledge of business - learn how to take calculated risks: hang out with people who are further along than you are.
If you are leading a cell group (or a small group of believers) and you want to reach more people - 'improve yourself' - spend some more time with God - do something you've never done before with your faith - stretch yourself.
The fact of the matter is this: With life you can't fake it long without becoming incredibly miserable. SO THE KEY IS: don't!
Be yourself - and grow each and every day!
Read, study, associate with people who are greater than you are, and analyze your days so you can better maximize tomorrow...