Many people understand “being in the now” as what Zen is all about. First of all, everyone is” in the now” all the time, anyway 🙂
The real problem is in the understanding part of it.
You can have a great life, accomplish all you want and discover who you really are without knowing what its all about. I mean lets get real -who does? In fact, understanding can make it harder to be “in the now”. Understanding limits you. Understanding limits your understanding.