Buying and Selling Stocks/Investments

Agree with 64DartGT, that’s called the Rule of Sevens. Expect your investment to double every seven years if you can achieve an annual rate of 10%, which is not as easy as it sounds over the long term. You can do better if you pick the right stock, but then again, you can do a lot worse. Are you willing to risk your principal? Do you feel lucky?