How are people getting these cool 6 figure work from home jobs where you only do 10 to 15 hours of work a week?

I've been looking for remote jobs to do and sometimes I stumble upon threads where people will say “I only work 2 to 3 hours a day and make 6 figures. What do I do with my downtime?” I personally would love to have a job where I get to do this. It sounds like a dream job to me. What career field can I go into doing this and can I self teach myself into them?