I know its quite pretentious to state that I would know how you can remain creative, but this is for me just a space to remind myself how I get things done. I hope this can help you in some way and inspire you to be creative. Please comment if you have your own tricks to remain creative. Maybe these will also help me.
So this is how I work:
#1 Keep a notebook at hand
I always have my phone on me and even if i am on the train or on holiday, I always have my online notebook at hand on my phone: OneNote. It can be something I hear. It can be something I think of or feel. I know I have to write it down immediately. As part of a general notes page, or as title of a new song or as a part of new lyrics for a new song. Even though I am quite sure that I would remember it again in the evening or even five minutes later, this usually turns out not to be true. So I Write It Down!
I let OneNote sync to the cloud and use the same notebook in the studio. Notes that change while on the road sync to the studio and vice versa. Eventually lyrics take their ‘final’ shape and then they are updated and saved as such. New versions get added and my OneNote pages always contain all lyrics from all songs and all lyrics and remarks that I collected while on the road.
#2 Work out of the box
Nothing is more inspiring than a real instrument. Even though it is entirely possible to write a song with a mouse and keyboard, its not my thing. Usually after practicing just playing away can easily result in new ideas. I try to record ideas immediately and with any fitting name its a joy to browse through all loose ideas and stumble upon a new song.
#3 Do not repeat
The thing that will surely kill creativity is putting some section of a new song on repeat. Even when perfecting a part of a song or a new idea I avoid putting it on repeat. After three times its time to look at another part of the song or start working on something new. All kinds of controllers, like the Ableton Push might try to make me work in a repeat loop, but I stay as far away from it as possible.
#4 Work fast, keep focus
Know your gear, don’t get stuck in finding stuff out while you need to be recording. Eventually when working on one song for a long time the dreaded hearing fatigue will kick in. Time to stop and do something different. Preferably not related to making music. Start listening again the next day at the earliest. Preferably in a different setting. Al too famous is listening in a car of course. If it sounds right there, you’re getting somewhere.