I think it’s very common for teens and 20 somethings to have depression come and go, and you sound a little depressed.
At your age there is so much uncertainty. It feels hopeless because you can’t see how the future is going to roll out. It’s all difficult and a big question mark.
Have you made friends at your new school? I find I can trace a lot of my depressions back to feeling lonely.
Planning things in the future that you can look forward to can be a big help to feeling better. Plan a lunch with friends, a vacation, whatever you might want to do. Fill your calendar. Not so full it’s overwhelming, but a few times a week something you like. What about a dance class, or something else you really enjoy. Dance happens to be what I enjoy. Do you have any classes this term that you love going to?
Do you work? If your school load isn’t too heavy maybe getting a job you like for a couple days a week will help. It will give you purpose and some money.
Sounds to me you aren’t so depressed you can’t go through the motions of the day, you just want to feel happier.
About the nightmares, when I’m not doing well I get reoccurring nightmares. When I can’t get rid of them after 4–6 weeks that’s when I seriously consider seeing a therapist. It usually helps. My nightmares typically have to do with someone chasing after me and physically harming me. It’s awful.
Also, you said you can’t stop thinking about something that happened over a year ago. This sort of thing used to happen to me. I would ruminate about something I screwed up, or something I witnessed, and what I found was I could reframe these thoughts and it would help them go away. That and I also learned how to compartmentalize my thoughts more. Reframing can be very useful. I think when you talk to your therapist they might be able to help you with that. Sometimes friends or even fluther can help with it too, but that depends on whether it’s something you want to share. Fluther carries more risk than a safer place like a close friend or therapist.
One last thing—young brains are wired to feel more emotional pain. As you age it will most likely get much better and you will have much more joy. That’s what happens on average. It’s been literally studied by scientists what parts of the brain are active in younger people vs older people. I know that doesn’t help you feel better in the moment, but there is really good reason to believe things will sort out.
You asked if anyone else feels hopeless. I don’t feel hopeless, but I feel frustrated and ill at ease that my husband and I are on slightly different pages right now. He took a new job in another city, and I’m very torn about leaving where I live now. I feel uneasy I guess. I don’t know how it all will work out.