I have long believed this, after trying things the other way around didn’t work out so well…
Author, scientist and humanist Carl Sagan believes the meaning of life is up to us:
The hard truth seems to be this: We live in a vast and awesome universe in which, daily, suns are made and worlds destroyed, where humanity clings to an obscure clod of rock. The significance of our lives and our fragile realm derives from our own wisdom and courage. We are the custodians of life’s meaning. We would prefer it to be otherwise, of course, but there is no compelling evidence for a cosmic Parent who will care for us and save us from ourselves. It is up to us.
via Brain Pickings