No doubt this has been covered before, but I'm interested in whether you write in a routine, or have bursts of creativity? Where? When?
Something I've found really useful recently is Google Docs - I keep sitcom drafts, sketch ideas etc on there, and then I can add / edit from wherever as long as there's internet access. Library computers (good for the lunch hour), internet cafes, your own laptop on trains etc. Means you don't have to carry your own disc / computer around everywhere.
Only problem is I can't put ScriptSmart into the Google word processor - anyone got a way around this?