Yes, there is evidence to suggest that writing down goals and keeping them visible can improve success rates.
Research conducted by psychologist Dr Gail Matthews from Dominican University of California found that people who wrote down their goals, shared their goals with a friend, and sent weekly updates to that friend were significantly more likely to achieve their goals than those who simply thought about their goals. The study showed that those who wrote down their goals accomplished significantly more than those who did not write down their goals or who wrote down their goals but did not share them with anyone.
Another study published in the Journal of Experimental Psychology found that people who wrote down their goals and made a specific plan for achieving them were more likely to follow through and accomplish their goals than those who simply thought about their goals.
Having goals visible in a prominent location can also serve as a reminder and keep people motivated to work towards achieving them. For example, if a person has a weight loss goal, writing it down and placing it on the fridge can serve as a visual reminder to make healthier food choices.
In summary, there is evidence to suggest that writing down goals and keeping them visible can improve success rates, as it helps to clarify objectives, provides focus, and serves as a reminder and motivator to work towards achieving them.