Honestly, the easiest way for me is to just use a "dumb" phone. I switched to an old Nokia and love it. I also use the SMS search engine Text Engine (http://www.textengine.info/) if I ever need to look up an address or directions. I definitely feel more productive, and most importantly present in my daily life.
Curious to hear if others have had success with other methods or if anyone else has tried going back to a non-smartphone.
Great question.