I think so,not all investor are successful maybe because it is not really their passion.Engaging in a business requires you to be strategic and smart to adopt quickly the nature of the business you are into.One thing more, you have to be patient all the time
I agree, there's some people who are successful in their investment, and there's people who are not successful in their investment. Success of investing are true, there's some people who earn a lot of profit, but there's some investment that fails. I guess it's your fate where you will land, but I agree that if you're passionate and patient, the chance of your success in investment will be high.