Stuck

I just wanna be happy again. Like genuinely happy. Lately I've been underlyingly sad, constantly. How do I switch this around? I just want to have things work out the way they do and be patient and optimistic and happy regardless. 

That's not the way I work though, instead I get depressed and upset with myself over and over again. Everyday. Sometimes I can't take it but I don't know what else there is to do. 

Last time I thought about talking to a professional. But I have no idea how to go about that. So for now I'm stuck with myself. And this blog.