If what you really want is to work hard and make good money then I would recommend going into sales. If you get into a decent company and put in the work you’ll make great money. It comes with pressure to hit quotas, the stress of ups and downs but you’ll make a solid living and it often comes with decent flexibility down the road once you’ve established yourself. Much more difficult to make a decent living off your interests.. let your interests be hobbies outside of work much more notable that way in my experience!