In 2011 three former Stanford University students; Evan Spiegel, Bobby Murphy and Reggie Murphy saw that one of the downsides of social media was that it made people less prompt in their responses like people usually would in face to face interactions. Their answer to this problem was to create what has now become one of the most dominant social media apps on the market: Snapchat.

Snapchat is an app which allows users to share short lived and self deleting pictures back and forth, prompting swift responses and increased communication. When Spiegel first pitched the idea in class, fellow students called it improbably to succeed, but being a true entrepreneur at heart, he did not give up and since its release in 2011 it has grown in popularity at a staggering rate.

A great example of how not giving up on your idea really can pay off.