Right Understanding of the 3 Facts!
The Blessed Buddha once said:
It is impossible, Bhikkhus and Friends, and cannot ever happen,
that one possessed of right understanding should ever regard
any phenomenon as really permanent ... or
any phenomenon as lasting happiness ... or
as an identical, unchanging, same, and 'my self'...
But it is quite possible, that an ordinary worldling may indeed
entertain and act upon such naive, false and distorted beliefs...
More on this supreme Ability to Understand:
Numerical Discourses of the Buddha.
Anguttara Nikāya AN 15:1-3