Probably the most common mistake is over-investment in one currency. No matter how promising it appears, investing all your money into one coin is a bit too hazardous. Cryptocurrency markets are pretty unstable. Even the most highly capitalized coins can fall dramatically. An investment in multiple coins minimizes exposure to such hazards. This approach may result in a steadier return.
In addition to long-term investments, include short-term investments.
There is always volatility with cryptocurrencies, so this is something well-known about them. Some of the investments are pretty short-term, while they just need to return the money within a few days, while others require some time to mature. Long-term investments are combined with a range of short-term investments in order to balance the portfolio. Sometimes, the placing of investment in well-established coins might be stable; but one can receive quick returns from investing in smaller projects. The blend makes sure that the growth happens constantly.