Meryl Benitah, 26, France

Meryl Benitah set up La Boite Qui Cartonne, a decluttering service after studying at the Sorbonne.

The company delivers boxes to be packed by the customer and then taken away and stored. They can then be re-delivered at any time.

Her advice for anyone pondering starting their own business: "Go for it, go fast, fail fast, and don't think too much. Just do it." she says.

"Being an entrepreneur is like a drug, I don't know if I'll ever be able to stop"

You can find our 30 entrepreneurs talking about their experiences in under 30 seconds each on our 30under30 special report .