"The question catalogue that will get you to your next service, feature or business"
You have to create products not just from ideas, but by looking at a specific problem of a certain person. This will guarantee results if that problem is worth solving for that person.
The question is how to get there. We recommend using "The Mom Test" by Rob Fitzpatrick, which equips you with the right questions in order to find a problem worth solving.
For instance, some questions are not useful for your purposes, such as showing a person your product and asking if the person likes it. Generally, people will lie to you to make you feel better. Rather, a good question would be asking people how they solve the problem you are interested in or how much time they invest in solving the problem. Open ended questions such as these are very useful.
If you need help implementing these questions from "The Mom Test", as it's not always straight forward, comment below and I'll send you the question catalogue we've been using for you to implement.