I have been here before, still am. I chose to terminate in this type of situation and kind of regret it now. The child was improving towards the end of our time together and the bonds we had were obviously broken because he is now gone. The stress and frustrating I felt pushed me over the edge and I terminated. Now I have another one in this stage and I have realized some just go through this. Even my own daughter has started and I know how consistent and stern I am with her, but she's a fire ball of energy. I'd wait it out, as hard as it is unless you feel you can't cope. That's not good for anyone. Explain to the parents what your seeing, tell then when it's been a hard day, what needs working on etc. For us, discipline is coming down to the child's level and in a stern voice saying no hitting, use gentle hands, we don't push etc etc. I always have them say sorry. I also try and give them the words for the situation. I don't use time outs, they never work. I do use "breaks" if the child is on a tail spin, I will explain why I think they need a break...your hot, running around, you are getting excited and hurting others...I think it's best you cool down over here for a bit. I might get the child to put their head in their arms and rest at the table, play puzzles quietly etc. I think it's best to direct them to positive, obedient choices but to realize they are toddlers and this is normal development. As hard as it is!! Good luck!!