How to get over my teenage depression/nostalgia?

I'm 14. I've been in high school for almost a year, And well, it sucks. I stress out over the workload I get every single night, I lost many friends, and technology has taken over my life. About 2 months ago I had a dream where I was 9 years old and 10 years old and it was summer and I was hanging out with all of the friends I now long for. There was no workload during these times so there was not a care in the world, and the only source of technology I had was my flip phone, which was of course only used to keep in touch with my parents. Many other small factors seemed to play a role in that dream such as the ringtone I had on my phone, and a song that I always used to listen to when I was nine and ten. And ever since I had that dream I have longed to go back to my 9 year old self, and have even cried about it a few times. Back to when all I had was a flip phone and not an iPhone or a laptop, and an xbox. Back to when every weekend me and my old pals used to go to the local park to play wiffleball, football, etc. Back to when I used to have those old pals as friends. Back to when the workload didn't keep me awake until one in the morning, back when my friends and I used to sit in the park and listen to that song, and back to when I was a carefree kid with no responsibilities and wasn't exposed to the harsh reality of this world. Please I need advice so I can't be so depressed anymore. And please nothing mean like "get over it." I've tried doing so but it didn't work.

Middle school, those were the days!

All throughout high school, I used to wish I was still in middle school.

9th - 10th grade were some of the worst years of my life due to things that happened in school, after school, and also finding out horrific things that were unrelated to school.

People in high school are hateful, jealous, and take out their insecurities on other people. Some people change after high school and are nicer and others aren't. The ones that stay angry and hateful are the ones that people meet in the workplace. But after high school, outside of work, you will be able to choose who you want to be friends with and who you want to date.

It sounds like your now seeing the reality of being older and needing to be more busy in order to survive. This doesn't mean you lost your childhood fun. You can still do that, you set some time out to do those kind of things when you get your work done. Sometimes it may take prioritizing things and managing time. Managing time is no big deal; it sounds more scary then it is. Planning on how you spend your time only take a couple of minutes out of the day and it makes you feel good in addition. Once you get your priorities done, you can then do what ever you want like a kid. This applies to when you live on your own and that can be even better- you'll have even more freedom to do things like you did in your childhood. In regards to friends, you will find some new ones. Enjoy high-school, high-school is a special time and if you don't try to enjoy it now, you will regret it later.