Every pilot, examiner, airplane, checkride, day, etc is different. The best pilot in the world could fail a checkride, and the worst pilot in the world could pass one in the blink of an eye. I've seen stuff like this happen a lot. In fact, I've considered (and I'm still considering) reporting a DE because of a COUPLE of the circumstances surrounding the initial MEI checkride of... someone I know. : ) Long story so I won't go into it now. You can listen to advice from everyone leading up to a checkride. And all of it will probably be true to some extent or under certain circumstances, or with certain examiners. But EVERY checkride is different. I'd say the best thing to do is just know your stuff as well as you can and don't fret. If you know your stuff and you're confident about that (confident-not to be confused with cocky... a serious side-effect resulting from getting your pilot certificate) then it will be obvious to the examiner. I have found (and once again... everyone is different) that the best way to approach a checkride is to act as if you're going flying and there's a really nice guy that you're taking up with you. He's interested in flying so he asks you to show him a few things or explain a few things. Just do it, explain it, etc. Worrying about it is only going to screw you up or screw you up more. And don't try to BS the DE. That's a big big NO-NO. They know their crap. They'll likely see RIGHT through it. And they've seen it all before. Also, try to look forward to your checkride. Although I'm not a big fan of checkrides, I do love learning new tricks and tips from the DEs during the rides. It never fails. They LOVE to impart knowledge. And everyone knows that every pilot thinks/believes that he/she is the best. His/her practices/procedures for doing everything are the best. So if he/she can make another pilot do stuff more like him/her, the skies would be a safer place. THE EXAMINERS ARE A PRIME EXAMPLE OF THIS. Use it as a learning experience. Even if you don't agree with it, everything they say is "VERY interesting" or an "interesting way of looking at it." You get the idea. Play the game, but at the same time learn something! Just remember that you can only do the best that you can do. No matter what there is ALWAYS a chance that you will fail. It's an unfortunate fact of flying life. A friend of mine showed up for a checkride after a full night's sleep, rearing to go, and the first thing the examiner said to him was "You look fatigued. I'm rescheduling the checkride." I also know someone that had a two hour initial-MEI checkride (two hours TOTAL... oral, flight, paperwork and all) because the DE had somewhere he needed to be. So it all depends. If you're too nervous, maybe you're just not ready for the license. Just know your stuff and fly like you do normally and you're putting as many odds as you can in your favor.
Happy flying all
CFI, CFII, MEI