How do I stop being depressed?

"Before bạn diagnose yourself with depression hoặc low self-esteem , first make sure
that bạn are not, in fact, simply surrounded bởi assholes."
- William Gibson
From what I've heard, bạn have a really unsupportive group of people surrounding you. No wonder bạn feel so low. It's definitely hard to remain happy, optimistic hoặc positive when negativity surrounds you. First try talking to your parents. Tell them politely but firmly that bạn think your brother's antics are going out of hand and to take matters into hand when his antics are starting to get nasty. Of course, a little bit of sibling fight is healthy, but as long as matters stay in hand. And for those people, who are making bạn feel bad, ignore them. They just won't be able to feel good about themselves until they hurt somebody. Sometimes if they get that their cheap mindgames are not breaking through to you, they may drop it. But if bạn find that, with every time bạn remain silent their bullying increases, speak up and give them a peice of your mind so that bạn will able to sleep well and peacefully at night.
And as a last resort, try moving out as soon as bạn can and try hanging out with a new group of friends. Hope everything works out for you. Good luck :)

Well actually I had and am facing similar depression from past 2 weeks. Yesterday I cried all ngày because of a person.

But bạn know what crying for people who really don't care about bạn is a waste of time and I have realized it. If your parents don't care about it then don't cry like a coward and just let them know that if they don't care bạn won't care about them too.

A tip as your Những người bạn bully bạn (they aren't actually your Những người bạn then but your enemy) ignore them, be thêm confident and read inspiring books, engage your self in âm nhạc (it will give bạn relieve) and instead of listening sad songs and cry try to listen pop songs and enjoy them. di chuyển out for a walk when bạn feel bạn are loosing your self and enjoy nature.

nhiếp ảnh is a good way to express your feelings to the world. bạn can write a diary so that there'll be someone whom bạn can tell everything.

Paper is thêm patient than people and they won't share your secrets hoặc make fun of you. Plus nghề viết văn diary in English will improve your nghề viết văn and speaking skills. bạn can always use a dictionary.
Don't hurt (physically) your brother back as maybe it could make the situation worse. Because he could attack thêm violently.

And feel free to talk to me anytime bạn want. I will listen to you. Because I feel strangers can understand your hoặc mine problem better than our close persons.

Be Positive ^_^
Lots of hugs