I'm a shy person but when I play tennis, I seem to gain a little more confidence and kind of get to be more of myself. So I would write how tennis has made me less shy.
I would probably describe a particular game that I played.
I have a first paragraph here:
Truthfully, I joined tennis because my friends thought that it would be a good idea. So I joined the tennis team freshman year. I soon found out that my tennis coach was strange. I didnt get his coaching methods. He would just constantly yell at you and do show us odd ways to apply everyday activity to a tennis skill. A volley in tennis is a 45 degree angle to the side that the ball is coming to. He told us to dance from our forehand to our backhand. Most of my friends that joined the tennis team with me the week before quit. But I stayed behind.
I could apply that I don't like to quit something because I like to stick it through.
I could say that you can't judge someone quickly because I have to come to like my tennis coach now. (Even though most of the schol hates him)