If you want to change majors change! &don’t burden yourself with thinking that you shouldn’t be just where u are if you do change. In the end it doesn’t matter where you are or where you went, but what you do and what you did when you were there. The outcome is still the same, & all the other little things that make it more complicated than that are JUST complications. 

Oh & also, the wishing you would of pushed yourself in highschool/middle school.. I thought it was funny cuz I’m totally the opposite. I did, i pushed myself to the limit all throughout grade school & by the time I got to college I was totally JADED. lol I’m thinking you have to have just the right mixture of pushing & lazing in grade school to have the motivation and skill to do it right in college. lol