If you want to have many bitcoin, you should buy more bitcoin. But if the price increases, you can sell some of bitcoin you have to make a profit, but if you want to hold for more, even if the price can increase high, you do not have to sell at that time. That will depend on your strategy because some people are willing to buy more bitcoin once the price is down, but they will buy at many prices level, and if the price is down, their order buy will be filled. We can still expect to make a big profit later, especially if bitcoin price can jump to the high price.