What should you do with life when you already have everything?

I'm in my late 30s, married, with a son. I'm in good shape, have built a successful business, made millions with it, and now enjoy a passive income of around $20,000 per month from my investments. Yet, I find myself facing an unexpected challenge: I have too much free time.

Every morning, I wake up wondering how to fill the day. My son is at school, and my wife is busy with her own work. I can't help but feel a lack of purpose in my life. I considered traveling, but my wife has a fear of flying, and due to school regulations in our country, my son must attend class daily.

I realize these may sound like luxury problems, and I certainly don’t mean to come across as ungrateful. But I genuinely feel lost about what to do next. Any advice or suggestions would be greatly appreciated!