1.Not well prepared: If we can't deliver properly in our class, we are losing trust our students 2. Humiliating students: We should not humiliate our students at any stage especially while dealing with challenging and angry students. Students come to our classes to learn knowledge and improve their skills so we should take responsibilities for their intellectual and academic growth in a professional environment. 3.Teacher student relationship: when we go to our classes we should not waste time in discussing our personal problems, it is personal experience that most of the student don't like it, and in addition it also decrease our rapport with students.