Risk and investments

The investment does not avoid the risk that something goes wrong. Do not avoid a temporary loss. In the long run - I am deeply convinced of this - you go out on the right. But under some conditions. You should observe the fundamental principles of prudent investing, some of which derive from the psychology of the markets (on which I mentioned last week: do not get carried away, avoid the "mental accounting" profit and loss, do not guess the best moment to invest), and others - with the usual Statistics