Which methods do you use to identify problems?

If you are an independent designer or entrepreneur, it is good to focus first on a specific target market, one way to success is to find an unoccupied niche. Beyond problem-solution thinking, also look at the entire system that is occurring - often people are involved in too many and high complex task arrangements to reach what they want. Simple contextual observations are the best means, and later you can intervene with your own solutions and installations to see what effect your design has - we call this creating an Experiential Design Landscape.