I know bitcoin since 2013 from various giveaway sites and faucets that pay with bitcoin, the first time I bought about 2 btc was in 2016 when the price was around $420 and after the halving day the price skyrocketed but I sold in early 2017 and made a profit of around $950 after waiting 8 month.
Actually you are very lucky to get to know Bitcoin in 2013, but unfortunately you just decided to buy Bitcoin for the first time in 2016. And what hurts
even more is the 2 BTC you bought in 2016, you sold it in early 2017. Even though if you sell it at the end of 2017, the profit you make is huge.
But that's life, sometimes we miss something big. It's like I'm a little luckier than you, because of the profit I made from Bitcoin in 2017, I can buy
a car and pay a down payment for the purchase of a house.