How to be happy on your own

I kinda think I am somewhat desperate in my search for a relationship. Kinda. I am quite open minded and would never have a relationship for a relationships sake. But all I want in live is to be loved by someone I love. And appareantly that is a problem...People always say that you should be happy with yourself. But how do I go about that? And something I fear about that, is that I would never feel the need to improve myself if I would be happy with myself...