I’m already brainstorming the next novel, but I haven’t edited the first one yet… I think the process of creating will always be the more fun part for me, rather than the ‘selling’ side of it. It’s always a matter of being a salesperson. Even if you’re not self-publishing, you still have to try to sell the idea to an agent or publisher. And that side of it is something I’m just not good at/have not much interest in.
Can’t always enjoy or be good at everything, though, that’s for sure.
Jonas David 
You are not alone Jonas. I certainly feel the same and know many other fellow authors do. Nevertheless, as you indicate it has to be done somehow though results are often disappointing. Marketing certainly seems to be an art in itself.