see, that journal idea could be the thing if worked on. The way I thought of it would be lists: things i like, things you like as well as things i THINK you like. Ask him to make those three lists and go through them, once on your own so you can absorb them, and then once with him. It clears out the wrong/unclear spots, as well as allows you something solid to go back to. And I'm not saying our likes and wants are set in stone, but at the same time it can be your way of giving a treat to him, a reward if you will, if you can find something on that list that can be an alternative to what you might have liked to do. Like, not necessarily a plan B, but a plan Aii, if you see what I mean. At the end of the day, I'm sure you as well will figure out how important it is to you. If you see you can't let it go, luckily for you being the Domme you can play the card "well, if you want to make me happy, really truly happy, as you say, do what i ask and be truthful." It might not work the first time, but repetition and, depending on your style, punishment, can also do the trick.