Im such a mean person!

So softball started a few weeks ago. At last practice, there was a guy that wasnt the best at batting. He stood at the plate like a baseball player and struck about about 3 times. I saw him on Saturday night and told him he hit like a girl and didnt know how to swing a bat. All day Sunday, i thought about what i said and how rude that was. Rob said that i just say the things that are on my mind and thats a good thing....i dont see how that is a good thing.....sometimes i need to learn to keep my mouth shut if i am going to hurt someones feelings. errrrrr im such a horrible person!