Taking time to look at a topic or issue from a different angle can often be a rewarding experience. You may be challenged to begin with, though as you discuss the topic from say the perspective of your supplier or a particular type of customer, new or clearer perspectives will emerge. You can think of this as role playing. Have some fun with it and consider doing it as a group exercise with your colleagues. What is really powerful is when you actually do the exercise with your suppliers and customers.
Now that you have considered the current situation or time period why not change the time to what it was like for that supplier or customer 2 years ago, 5 years ago or even 10 years ago. What is the progress you have made since then on improving your service, meeting their expectations and what have they changed to meet your requirements? Have there been changes in the information you need from them in terms of say working conditions? What about changes to the materials and processes they use?
Reflecting back on the progress you both have made will provide a renewed sense of progress. Now take your perspective into the future 2, 5 and 10 years. What changes do you seeing that will become the normal ways of businesses operating? How has the way you design your products and services taken into account the use of resources, the sustainability cycles and social impacts? Are you preparing for those? There are some great processes available to help facilitate this forecasting (some of these are mentioned in previous posts including how backcasting may be a better methodolgy than forecasting).
Enjoy the new awareness you gain from changing your perspective!