Develop the art of time management. If you really want to write, you will find the time. I don’t watch much TV (thankfully it’s not that much of a sacrifice to give it up) and use that time in an evening to do my major writing stint.
Keep going. Get into a routine. Be persistent. You’ll train your mind into accepting “oh this is writing time” and you’re then more inclined to get on with the job in hand. Doesn’t matter whether this is 10 minutes or 10 hours.
Scraps of Time
Use whatever little scraps of time you have to write notes, jot down story ideas etc. All those ten minutes here and there add up. Going to the dentists, doctors or anywhere you’ll have to wait for a while? I use that time to read. Reading helps writing. Train journeys are good for this too.
Writer's Block - WHAT writer's block?
Don’t worry about writer’s block. I’m not convinced it exists but if you feel stuck write down ANYTHING that occurs. BRAINSTORM. Who knows? There might be an idea or several dozen in there for future tales.