"You learn when you listen. You earn when you listen - not just money, but respect.
Pale ink is better than the most retentive memory.
Most fears of rejection rest on the desire for approval from other people. Don't base your self-esteem on their opinions.
There is no shame in taking pride in achievements or position. But nobody gets to the top alone.
You do not get what you want. You get what you negotiate.
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.