Although you will need a large amount of savings to get a high income, long-term investment is one of the safest methods of capital investment. In my opinion, long – term investments are a good way to "hide" capital in reliable assets for a long time and calmly outstay the period of instability. They are also great for various kinds of "global" savings.
RE: 15 Tips For Successful Long-Term Investing (ENGLISH/TURKISH)