When you see an old friend on the train, it’s best not to draw attention to yourself. Example: by not dropping your iPod on the ground, breaking its case in half, and have everyone near you look at you as you pick up the pieces with out looking anyone in the eye. That said, it can get your old buddy’s attention.
Now, how does this apply to writing?
This is a way of showing, not telling. I could easily have written:
I was nervous when I saw my best friend on the train this morning.
But that’s not very exciting is it? Show how that character was nervous. It’s a technique that took me a while to become a habit.
And yes, that incident above actually happened this morning!