Interior design – what are the most popular examples of decisions which should convince us that cooperation with an expert in the above analyzed field is advisable?

Some people, who find the way their house looks really (or even too) influential, tend to believe that their house is a significant mess. Although in some cases it can be rather connected with a tendency to assess our house as something that is always worse than others, we should also realize that in some cases there are some rational reasons explaining this tendency.