From your post I'm not sure whether you really don't like your job, or whether you have got "webitis".
Tim was once a person who worked (?) with me who was studying at tech one day a week, and working with us for four days a week, in a graduate program combining work and study. The people we had from this course usually went on to get jobs with us, so it was a very good opportunity for people who had not been able to find a job. One day he simply didn't turn up to work, nor did he the next day. Eventually he sent his boss an e-mail, stating that he was looking after a web site for a few gaming friends, and he much preferred that to work. We were all flabbergasted, but he was young and stupid, and the course was a really good opportunity for him to get a foot in the door.
Tim hadn't recognised that he had a well paying job that he just chucked in for a good time. You could say that is what MMM is about, but it isn't. The chief difference is that MMM is about becoming wealthy enough and frugal enough to support yourself and do what you want. It is delayed gratification, and re-directed gratification (instead of being gratified by toys, you become gratified by what is around you).
So what can you do? your website is like Tim's and is not earning any money, but it may.
You could look at the web site development you are doing, and work out if it is just a passing fad that you should treat as an addiction, or whether it is your real ideal job.
If you decide that it really is your ideal job you could either work out a way of it paying you - which might be very difficult - or work out a way of changing to web development. Your job is in a quite different area of computing, but I have known people who went from what you are doing into web development, so that may be a possibility. Talk to the other people around you and see what the possibilities are in your company - you might be pleasantly surprised at what you can move to. You could take credits in web development, and apply for jobs in other places...
But you really need to ensure that you do your current job as well as you can. Transfers to other areas of an organisation are usually easier if you are well regarded. Getting a new job at a different company is usually easier if the people you currently work with think you are a good worker.