Im 14 in highschool and want to become a navy seal how old do you have to be to become one in the navy?

I come from a family that been in the service since i can remember my brothers a marine my unc's a army soldier an i want to make a difference in my life i want to join the navy because if i die i want to know that at least i died protecting my country an i want to make my mom proud after all the bad things ive done in my life so please help me