How do i prove myself to my dad and show him that i can be successful?

Ok so im 15 and basically im not good at well... anything besides tech stuff and working out. And my father is a car salesman and an investor, a trader. he says because i fail at the little things, like cleaning and what not that i will never be able to make a living. now as right as he may be i want to prove him wrong, i want to make money, invest in stocks, and be my own boss. but how do i get there from me, being broke and all. i want to make it but WITHOUT him helping or knowing. and i haven't figured a way to do tht. Any suggestions??