HOW TO STOP MY HORSE WHEN SHE TRIES TO GALLOP AND RACE THE HORSE AHEAD OF HER,HOW DO I STOP? HELP||||||||||

Question

I HAVE A BIG PROBLEM WITH A MARE I RIDE AT A RIDING STABLE I RIDE HER ALL THE TIME AND ALL OF A SUDDEN SHE HAS A HABIT OF TRYING TO RACE THE HORSE INFRONT OF HER IVE TRIED GOING INFRONT BUT SHE TRIES TO CATCH UP WITH THE LAST HORSE BUT I TRY TO STOP HER BUT I CANT MY TEACHER TOLD ME TO STAND UP IN THE SEAT BUT OT DOESNT MAKE ANY SENSE WHAT DO I DO?HELP|||||||||||\

Answer 1

turn her into the wall

turn her head towards it so she can't keep going forwrds

also lean back in the sddle

not sure about standing up