Why does it feel like nothing changes? What can I do to change it?

There are so many ways... I will answer as a fellow bipolar... I used to get depressed too, since outside my room is a huge mess... they always shout at one another... I was always depressed, even at school, I also felt the same ways as you, I even asked my self "Will my school life be like this forever"... It was toooooooo boring... like my life wasn't any interesting... but you know, there's a hard trick to it... I said I was a bipolar because I interchange happiness and sadness, after I cry, I laugh like crazy... but at least that was my solution... the solution, the fact you are bipolar is to divert things to the way you want, find happiness behind the sadness, I mean if you saw a tragedy, if you can't take it, find happiness in it, laugh about it... people may call you crazy, but that is normal, writing down your feelings are good too, make them into stories, end them the way you like it, and make it like your life, write poems, write songs write essays, do them, put all your feelings on the paper, with or without anyone reading it, at least you were able to put them out, or if you can't write them down, shout them out, look for an open space... shout all your feelings... be crazy around people, be showy... because that is how lonely people change their background outside the house... you may also sulk in your room (not the most advisable though) and think of things that will make you happy... if your mom is shouting at you, don't pay attention, and think of things that you wanted to say, but to not make it any worse, you should not say them, just think of answers you would like to say to her... then all will be clear on your mind if you can defeat her faulty logic... then lastly... If I would prefer the most effective for me is that God is always there, have a connection with him, and he will help you, it may not be visible on the start, but you'll realize that in the end, believing him is worth everything... so just put your Trust on God, have faith on Him... Thank you...

If you're having trouble finding something to occupy ur mind, I encourage you to strengthen your religious values. I used to be bored and depressed a lot. I solved it by eating and I recently have lost all of that weight because I found God. The love he has for you is greater than anything you could ever imagine. I'm not trying to force religion here but if you're that desperate for an answer. The bible has them all.

I always used to feel that way. Now I look back on things that have changed before in my life and how things that caused me pan are over. All of this has an end and your life will change and it will get better you just have to get through it. That's pretty hard to do but you can find thongs that make you happy. Not everything is expensive, read a book, go for a walk, listen to music, go on tumblr. Just do things that make you happy and don't thing too much about what upsets you. And try to talk to other people, you can always talk to me

Thanks Alex but I found out a while back Im an Atheist, sorry should've mentioned that in the question, but I get what your saying, thanks for answering anyway :)