Hi OP, if you have experience and you hold most of your Bitcoin in 3 years it looks like you will make a big profit, but everyone will definitely learn from that experience to achieve success.
To be honest, I don't have that big of money, but I have made a profit of $1k in 2017 and I once suggested to my friend to buy BNB in 2018 because the price was still under $30 but he never listened to my opinion, and let's see now the price has gone up by more than 200%, we never know when the coin price will go up or down, but if a little bit of patience, we will get a lot of profit from holding the coin for 3 years and that is the result of long waiting.