During that time when I was switching from Canon to Sony, I scoured videos on YouTube variously to find people who were sharing at the time their experiences on having made the switch themselves or even those who were contemplating it. Within that mix of videos I stumbled upon Jason Lanier. Coincidently he was one of many who found himself in that transition phase and since then, I've found so many of his talks enlightening, raw and necessary, especially for somone like myself who's still attempting to figure out the business side of photography.
I'll be honest, I'm not particularly a fan of his work. To me, it's all over the place but that doesn't disqualify him from being a photographer who I can still draw encouragement from. Jason is very forthright with his feedback on what he sees in the industry which anyone else would probably be too timid to share because sometimes reality stings.
Either way, I highly encourage you to listen to his talks because they're likely to jostle your perspective on matters of photography that you've been struggling with. In my case, marketing myself and not giving into the illusion that photography is all about just snapping away.