There is one lesson I have learned, with absolute certainty, in my nascent trading career. It is this: Trade and invest based on your own convictions, based on the system of detecting opportunity, that you feel comfortable with. Without exception, every time I have ignored this rule, I have lost money. With an extraordinarily high frequency, when I have followed it, I have made money. The opinions of others about specific positions are not just noise, but distractions that will derail your profits.