When growing your audience it is your job as entrepreneur to identify your ideal customer, find out where they congregate and how to attract and capture their attention.
To do this you can look to divert audience flow from another channel towards yours. If you choose this route you will have to convince and convert which will be a challenge but you can still get great results from this.
Another way to approach growth is through strategic partnerships. Check out this short video that explains creating a win win win situation to growth hack your business.