Once we have lived a life with a goal and achieved some of those goals, it is worth living a life without a goal.
When you live such a life, just do what you have to do.
The rest of the time, just pick whatever you are curious about.
And follow the opportunities that come your way, and see how it turns out.
If you are scared this would put you off track, then try this for a month or two in a year. The rest of the time live a regimented, focused, and goal-led life. It has its own benefits.
That way you can experience predictability and discipline that comes with a goal-led life and enjoy openness and freedom that comes from not worrying about goals.