Creativity is a skill which can be learned.
A good place to start could be to find out how creative you already are. Take the test in the link below (or find your own test online). Make a note of your score, revisit it in the future (after working on some of our creativity tutorials) to see if it has improved.
http://www.testmycreativity.com/
Other ideas;
Test your divergent thinking; In 2 minutes or less – how many uses can you think of for a paperclip? How about a brick? A chair?
Test yourself at different times of the day, after a coffee, queuing in the canteen… When were you at your most creative? You might surprise yourself.