@Santeri_Korpinen has written an interesting piece that includes, among other things, the psychology of investing. 
We know from experience that the market rewards patience and money works over time. However, the stock market constantly tests an investor’s nerves. The biggest investment mistakes often do not arise from a lack of information, but from the investor’s reaction.
When financial media headlines scream and prices fluctuate, doing nothing feels like passivity, even though it is often the most active and productive decision.
Let’s examine the phenomenon through one of my favorite topics: the psychology of investing.