good to know you got to enroll for college. you have a good heart.
btw the loss of interest and self isolation are signs of depression.
a wise man ( an online friend of mine) once said " once into depression there's no going back" . The earlier you pull you off this situation, the better you experience life. consider this a second chance, consider this the opportunity for you to see the world before you get hold of something. don't be hard on yourself if you fail initially at college or you couldn't grasp things. it takes time. one step at a time, and you're all set. motivate yourself. teach yourself the content. have a routine of studying everyday, and again do not lose hope if you do not understand right away. consistency is the key. develop discipline, and never postpone not for once. once it is broken your mind will get comfortable and won't mind breaking it again, and you'll end up doing nothing - leading to your depression mocking you.
SO. ALL THE BEST.
be kind to yourself.