Perhaps I am speaking more to myself than to you because what I am going to write is easier said than done, but I believe it none-the-less.
How can I make people respect me more when I'm so open-hearted and playful? I'm not the typical push-over...I can be quite aggressive...I'm just kinda reactive and people like to take the piss...and I can't find it in me to just ignore people....because in the end I DO CARE what other people think of me.
My first point to make is that the key here is that you respect yourself. It is paradoxical that the respect you have for yourself actually conveys to others and where it does not simply becomes irrelevant when you hold yourself in esteem. Being reactive can be changed with determination. It certainly is not easy but it can be life changing and life giving.
When you feel disrespected poll yourself and examine what your own feelings and reaction to yourself are. IF you are feeling self-critical work on making that shift and feeling respect for yourself. You will be surprised at how significantly you will begin to see respect come back from others.