The whole thing is best summed as 'whatever you have, you will always want something else.' Even if you have self-actualization, which a psychotherapist in here say isn't even really achieveable.
Ultimately you'll realize that you want something that is impossible, like changing the immutable aspects of you ('transcendence').
There is no real shift between self-actualization and transcendence. Just wanting more to be above your peers, from being at the top of the hill (self-actualization) to being at the top of the world, for all time (transcendence). It's all still in the framework of competition.