(CNN) – For more than a year we've followed the lives of CEOs across the world  - and Sarah Curran is one of them.

Curran set up my-wardrobe.com five years ago after spotting a gap in the market. The website is more up-market than the high street stores, and less pricey than the fanciest boutiques. Sarah sold her house to fund the idea, and the gamble paid off.

Now she has almost a million visitors every month and sales have doubled every year. For some this would be an opportunity, but for Sarah it's a problem. She doesn't know if she's the right person to take the company forward, and is facing some tough choices.