The river flows rapidly down the mountain, and then all of a sudden it
gets blocked with big boulders and a lot of trees. The water can't go
any farther, even though it has tremendous force and forward energy.
It just gets blocked there. That's what happens with us, too; we get
blocked like that. Letting go at the end of the out-breath, letting
the thoughts go, is like moving one of those boulders away so that the
water can keep flowing, so that our energy and our life force can keep
evolving and going forward. We don't, out of fear of the unknown, have
to put up these blocks, these dams, that basically say no to life and
to feeling life.