It's not really a mistake, it's a personal strategy. ETH is the perfect choice and you have chosen the right time to buy, ETH is still undervalued compared to its value. I also believe that ETH will reach a new ATH when the ETH2.0 upgrade will launch next year. I won't sell my ETH until it reaches 10k$.
There is a big chance to increase the price of ethereum because it is performing so good at this time. It is a well known crypto currency and people will use it. I thin, the price of ethereum will hit 10k$ very soon.