You should buy more to be confident, especially for Bitcoin long-term investment.
Of course I also think that we need to be much more confident in long-term investments and take the opportunity to buy in much larger quantities. At present the situation we stand in the market may be a good time for all of us to purchase Bitcoin. For example since the price of Bitcoin is much lower now, we can buy more Bitcoin with less money if we wish.
But we are gradually getting a little worried about the condition of the market, let's mention the price of Ethereum as an example. While monitoring the Coinmarket cap, I also saw yesterday that Ethereum was at around $2K but today I see the price of Ethereum at $1,800.