‘Successʼ is 100% subjective: it is only being/having/doing what is important to us and thriving.
Every aspect of our planet & existences could be called ‘being successfulʼ (like saving lives or having £100000s or being famous or scaling a mountain or having a loving relationship).
‘Successʼ exists only in our minds: it is only what is IMPORTANT to US and to have/be/do/experience enough of what is important to us for us to be thriving.
What is your version of success?