$this->bbcode_second_pass_quote('Don35', 'T')he Three Characteristics of existence:
Annica (impermance). All things we cling to or are averse to, do not last.
Dukkha - (unsatifactoriness). Every life contains difficulty, suffering or unsatifactoriness.
Anatta - not self. All these things we believe to be "us", body, thoughts, emotions, etc. are not us.
So, we can be happy no matter what, Nirvana or Nibbana. There is difficulty (PO), but it is not Self.
How is that for a bit of discussion?

anatta does not imply the inexistance of any form of self, it just says that most things and phenomena people cling to as self... are NOT self.