The opposite of "turns one's back on" is "embraces," which means to accept or welcome something with open arms. Other antonyms include "approaches," "faces," "confronts," and "accepts," all of which imply a proactive stance towards a situation. Turning one's back on something, on the other hand, suggests avoidance or rejection. Therefore, embracing a situation or confronting it head-on is often viewed as a more positive and productive approach. Whether it's a personal conflict or a global crisis, the ability to face problems squarely and tackle them with courage and determination is essential for growth and progress.