Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

How to acquire skills required for long-term investing?
I would say that the three most important skills are: Note that some costs are hidden. So, for example, a mutual fund investing in other countries than where you live in may mean the investment target country charges a certain percentage of dividends going to the mutual fund. The mutual fund company doesn't usually want to tell you this. There may be clever financial instruments (derivatives) that can be used to avoid this, but they are not without their problems. If you diversify into equities at low cost, you will have a very wealthy future. I would recommend you to compare two options: ...and pick from these options the cheaper one. If your time has a high value, and you wish to take this value into account, I would say it is almost always far better option to choose an index fund. Whatever you do, don't pay for active management! It is a mathematical truth that before costs, actively managed investments will yield the same return than indexed investments. However, the costs are higher in active management, so you will have less total return. Don't believe that good historical return would imply good future return. However, if for some reason you see an index fund that continuously loses to the index more than by the amount of stated costs, beware!