To me this means having your mind focused on your task and surroundings or awareness. If you are at work, work. Make sure you are working economically and task driven as you can. When you are at home focus on the relationships at home. Don't spend time spaced out in front of the TV if you only have an hour or two to spend with the kids.
I also find multitasking very beneficial. This does not mean finishing a tender while trying to talk to the kids but does mean taking the kids to the beach and dropping into the job to check it out on the way.
