How components of strategic thinking contribute to rational thinking

Strategic thinking can consist of something as simple as how to buy groceries so that one uses one's weekly budget to determine what to buy and buy food that while healthy is also going to last several meals so o it can involve buying lots of vegetables which are relatively cheap to mix with a little meat and then cook it in the slow cooker overnight so basically it cooks itself. This then can be considered a rational way of buying and cooking groceries to save money, eat healthy and cook easily.