It is easier to criticize, but difficult...
Once upon a time there was a painter who had just completed his course. He took three days and painted a beautiful scenery. He wanted people's opinion about his caliber and painting skills. He put his creation at a busy street crossing, and just down below the board wrote which read -"I have painted this piece. Since I'm new to this profession I might have committed some mistakes in my strokes etc. Please put a cross wherever you see a mistake."

While he came back in the evening to collect his painting he was completely shattered to see that whole canvass was filled with Xs (crosses) and some people had even written their comments on the painting. Disheartened and broken completely he ran to his master's place and burst into tears.

This young artist was breathing heavily and master heard him saying "I'm useless and if this is what I have learnt to paint I'm not worth becoming a painter. People have rejected me completely. I feel like dying." Master smiled and suggested - "My Son, I will prove that you are a great artist and have learnt flawless painting. Do as I say without questioning it. It WILL work." Young artist reluctantly agreed and two days later one early morning he presented a replica of his earlier painting to his master. Master took that gracefully and smiled.

"Come with me." His master said.
They reached the same street-square early morning and displayed the same painting exactly at the same place.    Now master took out another board which read - "Gentlemen, I have painted this piece. Since I'm new to this profession I might have committed some mistakes in my strokes. I have put a box with colors and brushes just below. Please do a favor. If you see a mistake, kindly pick up the brush and correct it." Master and disciple walked back home.

They both visited the place same evening. Young painter was surprised to see that actually there was not a single correction done so far. Next day again they visited and found painting remained untouched. They say the painting was kept there for a month for no correction came in.

[It is easier to criticize, but difficult to improve! So don't get carried away or judge yourself by someone else's criticism and feel depressed... Judge yourself, you are your best judge!!!]