It is definitely a good thing that you realize that you need help. What I think you need support with is accessing this help. There are many many suicide helplines where professionals can help you to understand why you are feeling so down at the moment. It is impossible for me to give you the advice you need here due to lack of detail into why you are feeling like this. All I can say is hang on in there and think about all the people in the world that care about you and about all the good times you have had in the past and will have again in the future. Sometimes life is hard, almost unbearable and believe you me, I know what I'm talking about, but never give up. The feelings will pass eventually and your world will brighten up again. You just need the right support and guidance to help you through this rough patch. Try seeing a psychologist or talking to a trusted friend/ relative about your feelings to try and sort out why you are feeling the way you do and to try and resolve the issues.
I understand that you are angry about your previous post being removed, but unfortunately it is completely out of our control. Having not read the post myself I can only presume here that you mentioned that you were going to commit suicide. This is something we cannot allow to be discussed on these support boards because firstly suicide is illegal and secondly we do not want to encourage this kind of behavior or publicize it. It is not helpful for anyone- these are just rules of the boards and there is nothing we can do about it.
In future please be more constructive in your posts and posting things such as 'I'm feeling down can you help me' and explaining your problems as this way it makes it easier for us to help you. This is because we are not qualified or up to giving you suicide advise being on an anonymous message board system. The only place you can get that kind of direct advise is from a suicide helpline.
I hope this helps. Feel free to PM me if you have any questions or want to discuss your situation further.