After years of trying for a few seconds at a time and giving up, I finally discovered something that works for me -- listening to music about breathing. By listening to music, my mind focuses on one thing, something relaxing, and I can breathe without the silence doing me in. It's still not easy, but it helps.
Remember the Internet in its early stages? Fast forward to today. I get into my car in the morning on the way to work and my phone checks the traffic, finding the best route. During a quick stop at Starbucks, my Starbucks card pops up on my phone as I walk through the door so I don't have to open the app to pay. Another app streams personalized music during my commute.