Hello, I´m 13 and I´m very interested in Bitcoin, because of this I buy BTC. Actually, I've been studying BTC for over a year to invest. Back to the subject, I buy BTC for 9.200 dollars, and I would like to know if you think it´s a good ideia hold btc until it reaches 20.000. Anyway, for now i´m going to wait btc until it reaches in 20.000 for me to sell. What do you think about my opinion? 
First of all it's great to see such a young person investing into bitcoin and taking the time to research and understand the technology. My advice to you would be hold onto any Bitcoin that you can get your hands on. At this point in time, bitcoin is still experiencing a huge amount of price corrections and will continue to do so until mass adoption occurs, which is still a very long time away. Due to this, the price will continue to increase as demand increases day by day with more and more people being educated about cryptocurrencies around the globe.
The most important thing I can tell you to do is stay strong during periods of dropping value, something I learnt to do the hard way.