The problem with impossible goals is that there's no feedback if you're actually making progress. Far better to identify achievable goals that have a timespan

The problem with impossible goals is that there's no feedback if you're actually making progress. Far better to identify achievable goals that have a timespan of a few years max, and with milestones at least every few months to know you're on the right track. Impossible goals are ultimately a nonsensical proposition. And if you have an activity you enjoy, you just do that activity. Like crossword puzzles. They don't have a goal.