Buy high sell higher

The old folks saying " Buy low sell high" just don't quite work for me, especially when it comes to stock investing. The biggest problem is when you buy low, you really don't know if the price has hit the bottom or still going down even more. Nobody knows. Even if the stock price is not going any lower after you bought, the second problem is when the stock going high again? Will it be next week, next month, next year or in some extreme case, never? So, "Buy low sell high" is a pretty risky method for me. Instead, I follow the method "Buy high sell higher" A things in motion tends to stay in motion. When a stock is at the 52 week high, it tends to keep getting higher and higher. Then, I use (the system ) to sell portion of my holding one at a time to capture the gain and continue enjoy the ride. Of course, nothing is guarantee in stock market. We just have to use the method that has higher chance to win than to lose. Buy high sell higher works out great for me.