What are tricks older people use to stay wiser, a step ahead? Here are tips from successful people:1. Cal Ripken Jr., Hall of Famer: Think about the next thing."You don't live each day remembering who you were. Baseball almost seems like another lifetime ago. You need to do something that makes you feel good day-to-day. Just as you have a sense of accomplishment as a baseball player each and every day -- you have a goal to win a game or success as a hitter or make good plays in the field -- I need to feel I am accomplishing something."2. Jane Goodall, primatologist: Walk with the dogs."When I'm in England, which is home, where I grew up, where my sister and her family live, there are always dogs. There I get my relaxation walking the dogs where I used to scramble as a child."3. Maya Angelou, poet: Forgiveness."The most wonderful thing, as soon as possible, is to forgive yourself. People do only what they know to do, not what you think they should do. Not because they were experienced or were exposed to this and went to this school and have this degree. We think they know, but not necessarily.... I forgive anyone who comes in my earshot."4. Stephen Hunter, writer: Understanding."I feel like I am smarter than I was 10 years ago.... I mean understanding the systems of governance and culture. I mean sort of understanding those things that are worth investing anger or emotion in and those things that aren't."5. Jane Fonda: Happiness may surprise you."When I was in my mid-60s approaching 70, I realized I was so happy. It took me by surprise, because I come from a long line of depressives.... It turns out through very extensive studies of hundreds of thousands of people that over-50s -- men and women, married, doesn't matter -- have a sense of well-being. They are less stressed. They are less hostile.... They tend to see what people have in common rather than the differences, which is why we become good mediators."