Some of the mistakes that one should avoid include no investment plan, non-diversification, emotional trading, and attempting to buy and sell in the stock market at the right time. One must also not commit cash which one might possibly need in the near future as investments are unpredictable. Expenses reduce the value of the fund, therefore it is advisable to understand the expenses linked with the fund before investing. Worst of all, performing inadequate research kills one’s knowledge about their respective investments hence leading to the making of unsound decisions.
Source: https://probabs.com/how2invest/