I can try.
You are meeting with the leaders of Iran. You have to convince them to end their nuclear program by March 31st. Arrange the following things in the order based on how willing you are to give them up, from non-negotiable to most negotiable.
For example, t_host has listed happiness at number 40 and guilt at number 1. This means its first offer to Iran would be to eliminate happiness in the US in return for Iran's cooperation. Guilt, on the other hand, is not even on the table. t_host understands that America needs its guilt more than anything else on the list.
The meeting surpasses all expectations and the Iranians agree to end their nuclear program forever. But wait, April Fools! They already had a nuke the whole time! You made massive concessions to Iran and they stabbed you in the back! On April the first no less! Kind of poetic when you think about it.