Schedule in time to sit down and write or produce and when that time arrives with no ifs or buts sit down and force yourself to write...at first it'll be garbage but eventually you'll come up with a few ideas thatll really get the creative juices flowing
the amount of times I've avoided script writing because I couldnt be bothered. only to then sit down and crank out a 4 page script in 2-3 hours that im happy with must be going into double digits at this point xD have fun with it...there'll be rough times and smooth times