scaling mount everest

It's getting worse. Hamish is climbing on everything and I can't turn my back for a minute. Just a moment ago he had used Orla's cooker as a step and managed oclimb on top of the big toy box and had stood up and was ready to launch himself on to the toys scattered all over the floor. Stevie thinks he will do these things once and that will be it, as i see this every day I can just see him doing more and more dangerous stunts. My nerves, already in tatters, have no place further to go.