Shri Ramakrishna use to say, "As Long as I Live, so long do I learn". That man or that society which has nothing to learn is already in the jaws of death.
If you want to inspire confidence, give plenty of statistics. It does not matter that they should be accurate, or even intelligible, as long as there is enough of them.
We do not look at our own faults; the eyes do not see themselves, they see the eyes of everybody else. We human beings are very slow to recognise our own weakness, our own faults, so long as we can lay the blame upon somebody else.
The commission of the investment sins listed above is not limited to 'the little guy.' Huge institutional investors, viewed as a group, have long underperformed the unsophisticated index-fund investor who simply sits tight for decades. A major reason has been fees: Many institutions pay substantial sums to consultants who, in turn, recommend high-fee managers. And that is a fool's game.
Joy, shipmate, joy! (Pleased to my soul at death I cry), Our life is closed, our life begins, The long, long anchorage we leave, The ship is clear at last, she leaps! She swiftly courses from the shore, Joy, shipmate, joy!
Investors, of course, can, by their own behavior make stock ownership highly risky. And many do. Active trading, attempts to "time" market movements, inadequate diversification, the payment of high and unnecessary fees to managers and advisors, and the use of borrowed money can destroy the decent returns that a life-long owner of equities would otherwise enjoy. Indeed, borrowed money has no place in the investor's tool kit.
I warn the marauder dragging plunder, chaotic, rich beyond all rights: he'll strike his sails, harried at long last, stunned when the squalls of torment break his spars to bits.