Thanks you have undoubtedly done a good job on it. You got into bitcoin while still studying in high school, learned about bitcoin, did a great job. But today maybe because of your father you got so much support. But I think your father is enough to advise you here. After that the advice I would give you is that you can use a hardware wallet to store your invested bitcoins. If you can use hardware wallet then your invested coins will be very safe. Finally I would say hold your bitcoins for a long time and you will own a lot of money at a very young age.