We often talk about giving someone the “hard sell” when we want to convince them.
I’m a big fan of the opposite – the hard anti-sell. With the hard anti-sell, you clearly lay out all the reason someone shouldn’t, say, join your cause.
This isn’t about being negative. It is simply about laying out all the trade-offs explicitly so they have a clear understanding of the deal.
If they still decide to do it, you know you’ve found the right person