It's more commonly known as "flow" but it's practice. Limit multitasking. Have clearly defined goals (this is probably this biggest factor) that you need to accomplish. Start where you most feel comfortable and if you want to get to a point where you can publically flow, figure out mini challenges to get to that point. Don't get caught up in the film though. Some people are just lucky to go into insta-flow/-online most have to unplug and replug in. It's similar to mastering programming, it's just another discipline you have to train yourself into. You'll know when "it" happens. Good luck.