I was driving my 04 Cooper base and everything was fine. When I put it in reverse, I was able to back into a parking spot but now I can't shift intl any gear except reverse. The shift **** will not go anywhere. Only reverse. Any thoughts?

 

I'm guessing this is a manual. If so, maybe there is an issue with the linkage. Does it move freely, or feel disconnected?
A little more info would help understand the problem better.