As a teacher, we deal with different types of students. But all of them need psychological treatment. They need affection, concern , care and encouragement to develop into a perfect human being. A child may not be getting any of these essential elements at home, but we must render them all to help them grow into a happy being. Remember: Encouragement Helps in Laying Strong Foundation in Childhood. Small words / phrases/ sentences can be used - proud of you, love you, you can do better, you can do wonder, I know you can do, Keep it up , You deserve it, etc. You will find tremendous improvement in his/her behavior and studies in a couple of days.