Oh, man. I can procrastinate on the internet like it's my business. Twitter, Facebook, email, Google+, RSS feeds, blogs, reddit, forums, webcomics, and yes, even fanfiction. When I'm well-behaved, I can keep it to a minimum. Sometimes I'm able to tune out of the internet for days and instead get sucked into a good book or book series (most recently, Game of Thrones/A Song of Ice and Fire). Or, I get sucked into marathon TV-watching (or Netflix-watching, since I canceled my cable). All this can result in dark days when no writing gets done.
To combat all these fascinating, distracting things, I set goals and make lists. Currently, my goal is to either write 1,000 words per day or edit one novel chapter per day (depending on which project I'm working on). To keep myself honest, I keep a log where I record what I did, which makes me constantly want to one-up myself. So, a typical entry would be: "Wed, 7/20 - edited chapters 20-22 of TLA". Then, it gets really embarrassing when nothing gets done and I have to make an entry that says, "Thurs, 7/21 - nothing. Played on the internet all day."
My list is called my "Making Things" list, which I think helps me battle one of the biggest struggles creators have, which is
fauxcrastination. This is when you're reading excellent articles on writing, or talking about writing, or reading books that are of high literary caliber and are thus very writerly, or something similar. It helps to remind myself that all that stuff is really important and helpful, but it's still not actually
making something, which is what I'm trying to do.
As far as a ritual goes, I need to get my writing done between waking up and going back to sleep, so I just squeeze it in somewhere! Usually on my laptop, either at my desk, on my couch, or at a coffee shop. Sometimes, I'll write by hand on the bus or subway, or whenever I have a free moment. I don't drive much and it turns out that public transit is a great way for me to squeeze a little extra productivity in when I'm really busy!