This method strives to get a problem solved quickly and user-oriented. It really consists of several different techniques from deconstructing the issue to its core to finding and reviewing the best solutions. In the end, this method gives you suggestions and best practices but also the freedom to tailor the process to your specific needs by using respective methods from the UX Strategy Kit. Therefore the depth and thus the time and effort you are investing strongly rely on the complexity of the problem in question.
Clearly define the problem that needs to be solved. It is helpful to restate your problem in form of a question. Use the How Might We method to concretize this question iteratively.
There are different ways to examine your problem more closely. One of the most simple yet effective is the 5 Whys method which allows you to deconstruct the problem further with each iteration to find the poodle's core. In the end, you should have collected a variety of issues that form the basis of your defined problem.
Before finding fixes you should seek further insights into the defined facets of your problem. Typically, this is done through user research and interviews. Field study, Observation, Focus Groups, or methods from the Observe category, in general, are great ways to gather these insights.
Now it is time to find possible solutions for your problem(s). For this step, items from the Ideate section of the UX Strategy Kit would be extremely helpful. The most commonly used methods would be Brainstorming or Crazy Eights but it's advisable to look out for the ones fitting best to your use case. Also categorise and evaluate your solutions using the Wow-How-Now Matrix.
To make sure that your solutions are effective and accepted by your target group it is important to verify them. Methods from the Validate category are tailored to fulfill this purpose, especially User Testings have proven themselves to be an excellent way of validating your product. Keep testing and implementing your insights by repeating steps four and five until your problem is solved to fit users' needs.