When Steven Soderbergh won the Oscar for Traffic he celebrated with a nod to the creator:
“This is for everybody who spends just one hour a day doing their craft.”
That's it, just an hour, but it's the hardest thing to commit to. You've got work, kids, pets, a partner, a life. You need sleep. It's not easy, but it's doable.
As Seth Godin says:
“Do small things.”
And Guy Davenport:
“As long as you have ideas you can keep going.”
Find a routine and set time (2 minutes, 5 minutes, an hour) and stick to it.