Observe your surroundings. Watch the world around you. Take in the things you see and hear and that seem interesting or exciting to you. Seek out the things that stimulate your senses. Creativity is largely based on passion.
Participate in new things. Discover the things that interest you the most. Try things you have never done or what never have considered doing. Often the things that might have seemed the most challenging or absurd may turn out to be the most interesting.
Play. Creativity is based on passion and imagination. You have to allow your brain the chance to be "free." Free from constraints of societal, familial and professional expectations. Take time to daydream and "smell the roses."
Meditate. Often your inner sense of self will "tell you" what makes you happiest. Search deep within yourself and ask the hard questions about what your purpose is in life and what you would do with your time if freed from the obligations of finance or family. The answers may be surprising.
Discard everything you think you know. Examine the world from the completely opposite viewpoint that you are used to looking at it. This jolt to your sensibility will often stimulate new areas of creativity in the brain and allow you to access attitudes and possibly aptitudes that you were unaware even existed.