While I disagree that all life is suffering, "Our suffering is our own creation" is so often true. Richard Bach once wrote, We seek problems because we seek the gifts they bring to us.
There is a story where a group of people, all with problems, decided to summarize their problem, then put it on the table in front of all. They were then asked to choose the problem they would rather have. (I think the next question would have been, how they might try to resolve the issues if the problem had been their own.) But when given a choice to select any other problem...everyone selected their own.