You're going to love this video on YouTube aptly titled "Meaning is a jumper you have to knit for yourself": https://www.youtube.com/watch?v=psaCM1j9LEM

Also, Exurb1a has an excellent channel fraught with articulate video's about existentialism.

Then there's this. You're summarizing how much our non-working life has become a zero-sum game:

> Working on side projects feels maybe a bit shallow as well. I will probably not be advancing humanity in any way, not to mention that even making any revenue from them is relatively far-fetched, despite what IndieHackers might suggest. Therefore, I am stuck between working all day long for the unlikely chance that I might 'get rich' with some startup (and then what?) or slide into the comfort of gaming/hobbies/relaxing. Both have pros and cons, both take something from you, be it stress or time wasting. Life is hard.

Here's the hard truth: You have conditioned to feel guilty if you don't spend your time either producing or consuming.

Here are some blatantly false beliefs that tie into this:

Side projects are only successful if the yield either revenue or attain a vague notion of "impact". Satisfaction of whatever pass time you choose is a function of the amount of money you invest in it (buy the latest gear, invest in increasingly expensive experiences). Professional success is working at a FANG company, selling your startup after VC funding, entering the motivational speaker circuit, being a "thought leader",... "work hard, play hard" etc. etc. You have to "optimize" how you spend time in order to "maximize" your output. Which could be anything ranging from running 5 miles, meditation, writing a blog post and catching up on e-mail between waking up at 4am and breakfast, to monitoring your sleep cycles over reducing your meals to protein shakes to "not waste time eating".

You end up losing something along the way: Yourself. The things that define you as a unique human being. Having your own particular needs, desires, dreams, aspirations and wants that nobody else has.

For instance, you start running 5 miles each morning before dawn because "running invigorates you for the day to come." Well, yeah, sure, but are you actually taking this on because the idea truly resonates with you? Clicks with who you are? Or are you just waking up each morning, secretly resenting the entire thing, because some "thought leader" marketed the idea of "running = road to success" in such a way that you honestly started to believing that?

Your time is yours and yours alone. Nobody else is living your life. Sure, nothing of significance happens if you don't put in the time and effort. But that notion doesn't equate that whatever you have to do needs to answer to modern day ideals such as "useful", "successful", "productive", "rich", or whatever. Nope.

If you want to learn a language, play the guitar, write a novel, join a choir, make a stroll through the park each sunday, cook a nice meal, make photographs, sketch a drawing, read a book, play a game, go travel, etc. etc. etc

... then you should do that first and foremost because that's what YOU want to do with YOUR life...

It's awesome that Elon Musk did build up Tesla and SpaceX practically from thin air. Really awesome. And he likely enjoys doing that and he derives enormous purpose and satisfaction from those enterprises. But I am not Elon Musk. And I certainly do not aspire to become like Elon Musk.

Turns out that success and purpose are measures you have to define for yourself first and foremost. They can be literally anything, as long as they resonate with who you are. You don't have to build rockets in order to feel success. Just baking your own bread and sharing that with a friend can bring intense happiness and purpose. If you're only willing to accept that for yourself.

Everything else is above all sly marketing.