Let's assume you want to learn something useful.
You will need to come up with a project with milestones to achieve. Only *after* you set your goal can your brain kindle your whole body to learn.
Without focus it's impossible to master anything. Without specific problems to solve, there is nothing to focus on, nothing to learn, no motivation.
Humans are problem-oriented. If you recognize this you will 10X your passion and your productivity.
Just emulate the open-source devs. That's the passion that created bitcoin and nostr.