Everyone is creative...it's what propelled human beings out of the woods as a successful species. It's the defining characteristic of humans. We're not big animals, you think we would have survived all the large predators if we weren't creative or be able to populate all regions and adapt to any environment if we weren't creative.

You are creative, trust me, you're the result of millions of years of hyper creative areas of brain specialization however current culture has convinced you other wise.

It's a learned skill like any other. Google "learn how to be creative" and you'll find a lot of techniques to train yourself; read a bunch of these things and try stuff that you see popping up in a lot of them and/or stuff that sounds fun.