Clarity comes from - How you spend your newfound time evolves (where there is no salary/obligation to others). So the first couple of weeks I did nothing - just binging, lazing around like an extended weekend, then based on how I felt (bored/excited) kept moving to the next thing to the other one and so on.
The more refined and clear view came very late after 3rd month. It's all about things that make you feel content, sleep peacefully and still be curious and awed about. Realised that betting on a problem space for a 2 decade horizon is way more rewarding to my personal fulfillment and might also be financially great at some point.
Sabbatical was intentional, was planning for it for almost 10months (savings, analysing reasons why). Goal was to reacharge, learn things and do something about fitness at last (this one was a gap from trying to build something/startup).
As for a goal - I kept strength training, diet and waking up early (they go so well hand in hand) as the only constant anchor. These helped me be on a measurable track of self improvement and progress.
With the other time, did explore consuming content for fun, hobby or personal growth, enrolled to a course for upskilling etc. Right now added finding a job that matches with my clarity and long term plans as the next active goal.