I'm glad you have an appointment. I agree about the quote. In the middle of it you can't just choose to be happy. That comes later. It's like saying to someone to just snap out of depression (or get over the loss of a loved one). It is a process that you have to work through and eventually, hopefully you can see a future, have hope again and happiness.
I think I am there now, but not everyday. I guess some people can just pretend to be happy but whether it is truly there is another thing. But it is something to strive for that us a certainty.
Hope all goes well. Kath x