consciously and unconsciously, people tend to imitate those around them. that’s why the latest research shows that things like happiness, depression and obesity can spread like wildfires through social networks. so, surround yourself with friends who can also be role models. you can hang out with people who look and act the way you would like to. social imitation is the easiest form of self­improvement. social support is critical to changing all kinds of behavior. good friends can not only help you through bad times, but they can also help you stay focused on your goals.

밑줄친 부분 해석 부탁 드립니다.