Actually writing! I'd do something like write 5000 words in a burst and then it'll be a good thing if I touch my fic again within a three-month span.
Recently though, I tried the trial for Scrivener and found out that it's actually helped me in being more consistent, so I decided to just buy it once I'd used up my free 30 days (every day you open the app counts as one day, so it did last me a bit longer than a month). I think the main reason being is that the application makes it super easy for me to write down a whole bunch of thoughts and constantly refer to them when I write as I write. I can also organise character, plot, etc. notes separately, and even do some cool search features so retroactively changing details doesn't feel like a trial in patience. The clunkiness of trying to manage a lot of Word docs was literally killing my urge to write!