I don't know that I ever require inspiration. It is just a matter of making the time and doing it. I am a bit obsessive about writing and feel guilty if I don't crank out at least a few sentences in the evening, And it's not a punishment. There really is nothing I'd rather do, and I have to take care not to neglect family or other tasks in the course of pursuing writing projects. If what you are doing is fun, special inspiration isn't necessary.