Ikigai[0] is worth exploring if you find yourself questioning the grand meaning of things:
[0] https://en.wikipedia.org/wiki/Ikigai
> The Oxford English Dictionary defines ikigai as "a motivating force; something or someone that gives a person a sense of purpose or a reason for living". More generally it may refer to something that brings pleasure or fulfilment.[1]
> The term compounds two Japanese words: iki (生き, meaning 'life; alive') and kai (甲斐, meaning '(an) effect; (a) result; (a) fruit; (a) worth; (a) use; (a) benefit; (no, little) avail') (sequentially voiced as gai), to arrive at 'a reason for living [being alive]; a meaning for [to] life; what [something that] makes life worth living; a 'raison d'être'.
Personally though I've found the pursuit of this philosophy very hard to integrate into life. It's one of life's hard problems. It means somehow intersecting 'play' with 'work', but as many people say: 'work is something people don't do voluntarily'. Hence its name: 'work', we don't naturally want to do it. But if you can make work as a form of play, you already are living in Ikigai.