Sniper Lessons

So while running around (Ok standing at the desk trying to do a million things at once) at work yesterday I overheard a conversation between two coworkers.  One of our physician assistants was giving advice to one of our techs on a recent fire dept interview that he'd had. The tech was frustrated with how things had gone. The PaC (who happens to be retired Army Special Forces/Las Vegas Metro PD/SWAT) was explaining to him that he can't let it linger with him on his upcoming interview this weekend.  He said, "Man, that round's already down range. You can't do anything about it now, the only thing you can do is use the experience on the next shot to be fired. You can't take a bullet back once it's been sent down range. You can't change the direction or trajectory, so it does you no good to continue worrying about where it landed." I like this philosophy.