If investing were easy, everyone would make lots of money all the time. Sadly, investing isn't easy. But history is very clear: the hardest part isn't actually picking stocks; it is controlling your own emotions. Instead of jumping in and out of the market, as far too many investors do, you should create a long-term plan and stick to it through thick and thin. Indeed, there is a bear market coming, though nobody knows when, and this one single investment move will still help you build life-changing wealth even when the bear eventually arrives.

Mercurial investors are hard to deal with

Wall Street moves from one hot investing topic to another like a grasshopper. It is mind-boggling at times how quickly an investment theme can gain traction and fall out of fashion. One of the best examples is the dot-com bubble that rose and burst at the turn of the century.…