Biggest Obstacle to reach my career goal

My biggest obstacle I face in reaching my career goal is definitely myself.  If I don't put in the effort in school with my school work and such, I won't make it into college nor start my career path.  I want to be a sports therapist and also study kinetics.  I want to be able to help athletes of all ages and also run speed camps or softball camps with my dad.  I want to major in sports therapy and minor in business management and kinetics.  I will need business management if I wanted to start my own business in that field.  I honestly cannot wait until I go to college and start my path to the career in front of me.