Good to hear you gained profit from bitcoin and increase your portfolio. Reinvesting your initial capital would increase your portfolio once again. But remember, you wouldn't be lucky always. There is a possibility of losing your capital as well. Since you don't need your money right now, you can invest it somewhere.
In fact, this is true. Investing your profits will make your investment grow more, it can multiply, double, or anything once you handled it perfectly.
Some people are already good with their profit and they are using it in their personal errands. It is much better if you will invest on another profitable investment or businesses that you can think of, and then engage on it so that your profit will make another profit and so on and so forth.
If you are a wise man, you will not settle only on that certain profit that you've earned and you will make it grow more because being a successful investor doesn't have a certain amount of money to achieve it. There's a lot of opportunity in cryptocurrency space so you should explore.