Go through Maslow’s Hierarchy of Needs:

First, Physical. It might be something simple and fixable like a vitamin deficiency or a sleep condition. Who knows?? But you won’t know until you get a checkup.

If you are OK physically now look at Mental. Are your classes stimulating enough? Too hard? Are you excited about your major? Can you change it? I absolutely loved my classes, no matter what my grades were, because they excited and interested me!

Now, Emotional. Is there any leftover Trauma or Drama that is lingering? You talk about the “pit” and “where (you’ve) been a year ago”. Can you talk to a shrink, best friend or older big brother type person about this?

Last, spiritual. More nebulous, but just as important. Do you have a spiritual belief system? Do you practice it? Go to church or temple. Talk to a minister, or even shaman. Read up on spiritual texts. They don’t have to be religious. Even the New Age section of the bookstore has some gems in there.

Good Luck!