You don't need a big close, as many sales reps believe. You risk losing your customer when you save all the good stuff for the end. Keep the customer actively involved throughout your presentation, and watch your results improve.
Say and do what you mean, but never say and do it meanly.
You'll always get the good news; it's how fast you get the bad news that counts.
It doesn't matter how much milk you spill as long as you don't lose the cow.
If you have no destination, you'll never get there.
Deadlines aren't bad. They help you organize your time. They help you set priorities. They make you get going when you might not feel like it.