Another fun trick I learned in sales is that if you're trying to get someone to purchase something, instead of having them focus on whether or not they should get something, change their question to something else.
For example, I used to sell phones. Instead of having people try to figure out if they want the newest Samsung or not, I would take the phone in two different colors and ask if they liked it in blue or black instead. Putting it in their hands let's them imagine having the phone already and the question changes from should I purchase this phone to what color do I want?
I'm quite sure this can translate to other questions and decisions people ask themselves