Finding inspiration is the key ingredient in designing a space that reflects who you are. Things that inspire you are the things that will make your space feel like it truly exhibits you. One can find inspiration from a host of different sources:
movies, ART, FASHION,
Out of this list you should be able to find things that bring inspiration. Pick out the things you like, even if you know that there is no way you could afford it, pick it out anyways! Its all about picking the things that inspire you and achieving a look that represents what you like and who you are.