Just contributing VT, just contributing... if it doesn't apply to you, there is no point.
If it does (you did read the thread!), then the underlying message (whether telesales, face-to-face, ad copy, or whatever), is to be different.
Not bragging. I haven't said that "I'm a millionaire and you can be too". I haven't claimed to be the greatest salesperson on earth. Take it or leave it. If what you're doing is working, great!
If you've ever taken more than 2 sales-calls, you'll no doubt know it just from the first 3 half-hearted scripted utterances you hear. The fact is most people in sales are like that (I get these calls too). OTOH, you get someone who is in command of the conversation, add a pinch of cheekiness tinged with authority and a dash of humour... and you'll at least listen because we're inherently curious of something new... look at "Rich Jerk".