If you are a writer. Always have a notepad and writing tool with you, those one line thoughts write them down as you get them, and add to them if you reflect later on. when you find yourself in stumbling block, you can browse these thoughts of interest from the past.

Basically practise exercising your brain, to focus or dismiss distractions, overcome distractions, been able to put your mind to a determined frame. One other thing may be to imagine, and place yourself in the shoes of another and write that view point, in doing so, you can often see more then the vision you started with. write from the opposing side?