“Being able to restart yourself after interruptions will increase the amount of time, and the situations, in your life when you can work creatively. … To overcome the obstacle of the belief in the perfect time and place to work creatively you need to develop the attitude and mental resources (through practice) that allow you to work anywhere at any time. … you will find yourself in situations where you notice things that are new to you, or notice something special about a situation you never realized before.”Roz “Another Potential Journaling Hiccup”
Note the words “through practice“. It won’t happen magically, you have to keep trying and trying again for it to become easier. Like being able to concentrate in an open plan office, or driving on a motorway, or moving through a crowded station without bumping into anyone.