Assuming you want to be an Indie game developer :
Let's be straight about one thing, Game Development, Indie if you mean, is hard nut to crack.
If you want to be a game developer having a wide spectrum of skill isn't enough. You need to be persistent and focused about what you do. Test yourself. Make a simple game. For the sake of making things easy, take one existing 2d game you like and replicate it with minor changes. You will get an overall idea of what it takes. Your previous experience will help you to get started.
Regarding your last questions, there is a lot of things you can do to get a job in game industry, in case of big titles. The question is what part of game development are you interested in.
If you are unsure about what to do, and you currently have a job, stick with that and make a game that 'you'd like to make' in your spare time. You will know, if your fit for it.