Whether you want to get more organized or start to focus on the positive things in your life, journaling can always help: just ask Oprah Winfrey. "Sixteen years ago I started a gratitude journal, and I believe it was the single most important thing I've ever done," Winfrey has previously said. "Every day, for years now, I've written down five things to be grateful for." Even Meghan Markle knows the power of a good journal-she reportedly gifted...