Many parents would agree that their child’s teenage years are harder to cope with than all the sleepless nights when they were a baby, or the tantrums they threw when they went through the “terrible twos” phase. There’s something monumentally frustrating about a child who is not yet an adult refusing to listen to your advice, follow the rules and stay out of trouble. A lot of the time you feel that level of frustration because you know only too well what being a teenager was like, and the regrets you may have from when you were that age. Why can teenagers be so difficult to live with, and what’s…