As Edison's saying goes ... "Success is 10 percent inspiration and 90 percent perspiration."
Apply that to writing? Well, read what Winston Churchill had to say ... "You should go to your room every day at nine o'clock ... and say to yourself, 'I'm going to sit here for four hours and write!' ... if you sit waiting for inspiration, you will sit there till you are an old man."
Happy writing! And here's to lots of perspiration :-)