use the fear to your advantage. i always retreated when under fire from my sparring partner. then i learned two good strikes that worked great while retreating. (1) while backing, i'll step to the right and do a low spinning heel kick to the leg while backing away (2) or step back, drop down into a dragon tail sweep.....when most people attack they raise up out of a good stance and get on their toes. this makes them more succeptable to sweeps and leg strikes. try it. i promise it'll work. the spinning heel kick is my favorite. it looks like damnit but the heel frogs any muscle it hits!!!