If you're writing inconsistently, maybe you're not taking your writing seriously (enough), which may be due to you looking at your writing as a hobby and not as a (dream) job. Don't you admire people who say, "I love my job!"?
Rosellen Brown, the author and (adjunct) professor, strongly advised that to succeed at writing, one should "approach it as a job":
It’s a job. It’s not a hobby. You don’t write the way you build a model airplane. You have to sit down and work, to schedule your time and stick to it. Even if it’s just for an hour or so each day, you have to get a babysitter and make the time. If you’re going to make writing succeed you have to approach it as a [dream] job.
