I had just landed after a 24+ hour flight. And this chap was eager to show me what he had accomplished. I hope he would understand as I finished my meeting with the customers and headed for the hotel. I could always see and appreciate his work later. Do you think my colleague understood? No way! All he felt was hurt and rejection. I eventually lost this engineer. This happened a long while ago. One valuable lesson learnt, but at a cost.
You see perceptions are realities. It doesn't matter what you thin. What matters is what the other person feels. Always take out time to smile, pat a back and encourage. It doesn't matter how dead you are; how busy you are.