Thushan, whats happened?
I've been through this situation far too many times. The fact is, I don't believe that everything will turn out alright. I'm a born pessimist, and see the clouds coming. But in the end, (I really don't know what context this is in) I look back. And I look at all the instances where I have listened to my gut, that voice inside me that knows what is best. And every time I have listened to it, I'm thankful after because something stupid happens and then I become so glad that I trusted myself. In the end, I realised that no matter whatever happens (and shit does happen) I have to trust myself that I CAN MAKE IT RIGHT. That I have faith in my intentions and my ability. I don't need friends to tell me I'm a good person, because I know that at the end of the day I do what I believe is right. And so what if it isn't? At the time it was.
I could give you a hundred examples. But really, all you ahve to do is look back upon your life and ask yourself, did you do your best? Did you do what was right? And you, yourself can only give that answer, brother.
If you realise you have stopped believing in yourself, find a way to fix it. Its a sink or swim situation mate. I know you. I know how you think. I can say you are amazing all I like, but thats not going to fix the problem. You can do that only yourself.