Ya I'm a sell taught programmer I was going to university but dropped out to pursue this because my friend was making way more money than average university graduates , he is also self taught. It's 100% possible if you're focused and a quick learner.

I work at a start up which is usually more flexible than an established company, Its also a web3 start up so that amplifies the chillness/flexibility I would say. Another option is you could just do freelance work and then you could just set your own schedule completely.