You don't need to follow the market's hot trends -- but if you do, choose some safe stocks to balance them out. If you can imagine buying a stock and holding it for 30 years, you're ahead of the game. By following that kind of investing philosophy, you give yourself a good chance of beating the market and perhaps becoming a millionaire. At the very least, you're likely to retire much richer than you are today. There's no way to know for sure what will happen to any specific investment, but if you do your du ...