college blues

so since ive barely been to highschool where they prep you for college im freaked out about to go in and having to grasp things quickly in order to be up to speed. i just hope ill be able to get the grades i need to get accepted into the utmb. god i feel so lonely and scared. how am i gonna do this? ive never been able to commit to much, god help me. the prospect of college is frightening.