I agree with Ram Dass!
Be here now is pretty good advice. Now, here, *this* is reality and it's where we can make choices. 'Now' is where your power is.
The problem is, the past and the future can interfere. "But these horrible memories or terrible fears of the future have hijacked my feelings and focus!"
And there is the work. Whatever keeps me from being in Now is precisely where I need to apply healing and change. EMDR is a great system for regaining my Now.