Writing starts at thirty

Is writing only for adults? This infographics shows that the majority of the successful writers have produced a breakthrough book when they were 30+. I think it's the maturity and the confidence of who you are and what you want to communicate that influence your creativity at work. 

 

Source: http://www.adweek.com/galleycat/exploring-the-careers-of-famous-authors-infographic/97583