Defining my purpose

“If you are already done and complete, how do you want to spend your life?”
As much as I love this question, it gives me a really hard time.
Most things I think of reveal that I’m looking for approval from the outside.
I started with “I want to help people flourish” – and it sounds like a good purpose to have.
But in the end, I need to see them flourish to feel accomplished, right?
Which means that I’m not coming from a place of feeling 100% worthy.
I then tried on the purpose “I want to flourish”.
And it’s true to me: I want to make most use of my time on this planet.
At the same time I feel that there is something missing, that I should aim for more.
Any advice? I feel this sentence is so important and I indulge in confusion at the moment.