A long, long time ago, in a garden not so far away, faint echoes of an argument could be heard. But put your ear closer to the ground, and you will find the situation much more interesting than just that…. "Wrong, wrong, wrong!", the spider screamed at the frantically working ant. "Your posture is wrong, you are working much too slow, and your technique - bah!""Would you like to try?", the ant said, or would have said, if she wasn't working her legs off collecting grain. The day eventually passed, but the next was no less terrible for the ant. "What, again? why won't you use my advice!?", screamed the spider. This time, the ant stopped working long enough to say, "If you can call that advice at all."The spider became furious and screamed incomprehensible gibberish at the ant. The next day, as the ant came in, she was surprised to hear a reluctant greeting from the spider. The spider was equally surprised by how fast the ant worked when he didn't insult her, and instead, muttered things like "Keep it up," "Great job," Or "Just a little more". "Spider, I think it's time you stopped criticizing that ant." "But lion, the ant is doing everything wrong!" "Spider, I am your boss and this is an order!" The spider reluctantly agreed and left the office. From that day forth, the spider and the ant grew to be friends. 
Encouragement wins over criticism. 