1. Critical Thinking 2. STEM-fields 3. Stimulate creativity ... At any age / stage in life, I feel these would be most helpful. Rather than elaborating with lots of (incomplete) arguments, I would invite anyone to just think about those (or your own suggestions) for a while and think where they would be purposeful in todays world, with pandemics, fake news, social media, the modern days obession with achieving happiness ...