I do write small writing prompts on my phone whenever I get an idea. I just need to go and pick them up sometime :P
My problem with writing is that sometimes I just hover over a single sentence and sometimes I just ramble on a couple of paragraphs then re-read it to see that what I wrote was overtly detailed (just like how I tend to overexplain things when talking).
I guess its a start, but I like your idea of timeboxing the writing activity.
















Can you give some examples of how you outline?