you cannot forgive a parental figure for the latter (which happened when you were a child) thus some part of you believes there was a 'truth' or 'meaning' attached to the event.

I was going to say this reminds me so much of behaviourism; and then, in the following paragraph you said 'I like behaviourism' :) (me too!).

how we can increase this baseline over time so that the support level for hedonic adaptation, when we eventually drop down again, is always higher than the last time.

Based on this study this can be achieved trough continuously engaging with intentional activities; the believers of this model go as far as to say that this provides 'chronic happiness'.

This is a very beautiful comment @rionpistorius :)
Thank you so much for taking the time to share your thoughts on this. I feel that tere is so much that can be learnt through what you have to tell us.

All the best!