In my opinion, "clingy" women are insecure, dependent women. If you have your own life and interests you will be less likely to feel like you need a man to make your life complete. This is not to say that being in a relationship won't enhance your life but it shouldn't be the ONLY thing going on in your life. Find something to do that you really enjoy - a job, volunteering, whatever and get into that. Learn to appreciate the fact that you can be happy and self-sufficient on your own and then you won't feel the need to latch on so tightly to your next boyfriend.