彼は無我の境に入って筆を走らせた。
Completely lost in the work, he let his brush run across the paper.
演奏者は忘我の境で曲を弾き続けた。
The performer kept playing in a state of total self-forgetfulness.
長い修行の末、ようやく悟りの境に至った。
After long training, he finally reached a state of enlightenment.