It hasn't been easy, but it has had it's benefits. Doodling and what I often refer to as "graphic journal-ling" tunes my mind to a higher frequency of receptivity. This practice unconsciously opens my awareness to the present as my critical mind slips away. I feel a sense of calm and well-being and I begin to sizzle with enthusiasm as my thinking becomes inspired.
For this reason, I'm never without my pocket sketch pad (Click for suggestions on choosing your perfect pad). Doodling during lectures and meetings has enabled me to grasp, assimilate, and apply information in radical ways to the benefit of myself and others. This is the same information that my conscious mind would've dismissed as mundane, boring and of little importance had I not been doodling.
So doodle, even if you get caught it'll be worth it.