Help help help starting all over again. share your story to boost my morale?

this year i have ped my 12th and am dropping the year to prepare for mbbs entrance. but am totally broken down because i had been preparing for those exams since cl 11th. i think i have let down my loved ones and it feels sad to watch my friends joining college. actually i would have also got some college but then i wanted to study in some reputed one. please friends boost my losing self and do share your story if you have experienced anythng like this.