the founder of the actualism method, richard, does not suscribe
to any religions, is non-religious, but has much wisdom to be
learnt from. so seek after true wisdom and experience rather than
get stuck in beliefs, concepts and knowledge. the reason why i am
mentioning this to you is because you have a clear memory of a pce
(you saw a tree and the sense of self disappeared leaving only
pristine clarity of the tree), and his method has a lot to do with
cultivating pces.
richard is the closest non-buddhist to the buddhist arahat.
there are much similarities. even though i would not equate him
that way and state that the buddhist insights are superior to what
he realized. but nevertheless, whatever he experienced is
important.
here are some essential articles:
This Moment of Being Alive -
http://actualfreedom.com.au/richard/articles/thismomentofbeingalive.htm
Attentiveness and Sensuousness and Apperceptiveness -
http://actualfreedom.com.au/richard/articles/attentivenesssensuousnessapperceptiveness.htm
Introducing Actual Freedom -
http://actualfreedom.com.au/introduction/index.htm