How to be happy?

Forget pursuing happiness. we'll not find happiness by chasing it because we don't know what makes us happy. Let's take cat as an example, the cat's way of happiness is just doing something that they find interesting: this will make them happy without knowing anything about happiness. Cat's don't know about the concept of happiness or what it means to be happy. They just are.

What is the best advice on setting a goal?

When you set a goal don't set it as "I want to achieve X" instead set it as "I want to enjoy every single second on the journey to achieving X". That way you can enjoy the process and the journey of achieving. Rather seeking for achievement itself

Can I mirror an essay on my site?

I'd rather you linked to it instead. I like to keep track of which ones people read, because it gives me ideas of what to write about next. I also like to be able to fix typos.