Like what most have mentioned, the only thing that I see this from working is if you hire someone who does the trading/investing for you, which I think is risky enough for someone to get scammed. In addition, avoid ponzi-schemes since those kind of business models cannot work in longterm due to their nature of offering significant amount of returns in a short amount of time.

I personally advise you to check your BTCs regularly and the market price. If you plan on HODLing for long-term gains, then the best way is to HODL and currently check the market value depending on your goal. Assuming that you aim for short-term profit, then withdraw them as soon as its price reach above the initial investment you put on.