In m Krishnamurti class, I was asked::

“ What is the difference between awareness and concentration according to K?”

“… Attention is not the same thing as concentration. Concentration is exclusion; attention, which is total awareness, excludes nothing…” (Krishnamurti, p31, emphasis mine).

It all comes down to what Milarepa said about demons – befriend them, take them to tea.

Whatever your demons are, you are free to work towards their exclusion. Ignore your alcoholism, your bigotry, your fear. Concentrate on your breathe when you sit in Shamatha (a form of breathing meditation).

Or:

Befriend you demons. Admit they’re there. They will appear when you sit in meditation. However, you may just find that noticing them (giving them attention) removes their power. Be aware of your breathe when you sit in Shamatha.

For a brief treatment on demon tea time, I suggest: http://www.kimberlyschaos.com/wp/page/16/ For a longer treatment, I suggest Volume Five of ‘The Complete Works of Chogyam Trungpa’.