让人感到心情愉悦的句子英语可以说成 “A smile can change the way you feel” 或者 “A happy thought can make you feel better”.

In addition, a phrase like “A peaceful mind is a happy life” can also help to promote happiness and contentment.

总而言之，一个微笑、一次乐观的思考、一份平和的心境都可以让人心情愉悦，从而带来更好的生活。