What you should be most careful about when investing is risk management. Any investment has risks. Even bank deposits, which are said to be safest, the risk that the bank will not be crushed is never zero. Even so, if you concentrate your assets on just one investment, there are times when your assets are significantly reduced when you fail in that investment.
It is also important to invest in several kinds to avoid such a case. How much do you deposit on bank deposits that are said to be the safest, investing in equity investment and real estate investment somewhat. In this way, if you invest in several kinds, you can escape great damage if you fail with one investment.
Also, each investment does not mean that the market is moving individually. Each is somewhat synchronized. One investment has fallen overall, but in other investments it is often the case that the price has risen totally. It happens because investors truncate one investment and escape to another investment. In other words, even if you make two types of investment, even if one drops in price and gives a big loss, you can make a profit by raising the price on the other side.
In this way, when investing, thorough risk management is important. If you manage this risk, you can surely increase assets while reducing the possibility of losing valuable assets.