The end of the year is a perfect time to reflect on your investment journey. Part of that reflection can involve identifying mistakes worth avoiding or portfolio moves to make before the end of the year. You can also dig deeper into a particular sector or type of stock, such as growth stocks versus value or dividend stocks.Here are three lessons you can use to help pick winning dividend stocks to buy and hold in the new year. 1. The power of earnings growthThere's no force more powerful in the stock market ...