How to Persuade People to Buy or Use Your Service

The wheel was about me applying psychological insights online and testing, whether that increase your sales or increase the amount of happy users. And since there's so many techniques and insights, we've documented over 250 of them. I tried to fit it in some sort of categories and there's 17 categories in the wheel just to make it a bit more easy to deal with. So how, yeah, what techniques should I use at this point to persuade people to buy or use my service and be happy with it? Come back.