If something is not right for you, learn how to say "No thank you." and mean it.
I dislike salespeople that sell, sell, sell, sell, sell. How about solving a problem I might have. I've learned that there are few things in life that a salesperson cannot overstate. Everything is always "The Best", "The Strongest", "Most User-Friendly".
In college marketing classes, they call that "Puffery"; in my office, I call it "Blah, Blah, Blah."
Personally, the more superlatives, adjectives and other fancy language a salesperson uses on me, the less I believe him. I'm cynical and skeptical, it's true; but it's only because I've been bitten here (and there) in my career. So how do I make sure I'm not being duped or oversold? I question. I object. I suspect... But more actively and objectively, I test.
Salespeople beware. There is a new consumer out there that cares what they buy, from whom they buy it, and what "its" impact is on the world. Make sure you are solving a problem, rather than just trying to make a buck.