On mindfulness

I work at living in the moment, but I often fail.  It is hard to be mindful, and to live in the moment when so many things are tugging at my consciousness.   I know this is a common complaint for anyone trying to be more aware of the "now."  And yet, in the real world, at work for example, how does one be mindful when there are so many tasks and deadlines to manage?  So many pressures, from so many directions, and so many phone calls, and, and, and...