Sometimes I wish I'd never been born.
Why wish for something like that?
I'm thinking about killing myself so I can finally be dead already.
This is unhealthy thinking. I urge you to get professional help immediately.
There's no point in getting help now, I already know what I'm going to do.
When you're feeling suicidal, it's crucial to get help so that you don't do something drastic. There are people who can help you deal with these thoughts and start to make improvements in your life so that they don't recur.