Aww, listen you are who you are and that's no bad thing. You don't need to compare yourself to your brother, because you're different people and your parents love you for who you are. I know what you mean about keeping emotions behind closed doors, I'm exactly the same, and I hate people seeing how I really feel, but when I'm alone it all comes out. Whether you do it in private or with a friend or whatever, you need to let your emotions come out. Even if you end up bawling like a baby, you'll feel better afterwards.
I'm sure your family's proud of you. You seem like a generous caring person so they will be. Having said that, you don't always have to put others first. I do that myself too, and it takes its toll. Doing something for yourself every once in a while is not selfish. As long as you're not hurting anybody, how can it be? Your nanna won't dislike you because you didn't take her away or whatever, as long as you're there for her and you listen to her as I'm sure you'd like her to listen to you. That type of thing is a lot more valuable than any amount of money you give.
I dunno if I helped you, but hopefully I did and please don't try anymore suicide attempts. Things from here can only get better if that's what you're considering, so hold onto that thought. Find stuff to do to take your mind off things.
Isn't it funny how people are willing to give advice to others, but when they're in need they don't listen to themselves?? Just saying this cause you replied to my post on here and now I'm helping you lol.
I'd comment on the Newcastle thing, but I used to work at St James'

not that I care about football anyway lol