Often we fail to improve our lives simply because things don't get bad enough. If your new job is hell, you’ll leave it, but if it’s just unsatisfying, you’ll likely grind it out. Thus, small problems often threaten our quality of life more than big ones.
Pessimists see problems. They worry about what could go wrong in the future. Optimists see possibilities. They focus on what could go right in the future. Proactive people turn problems into possibilities. They give us reasons to be optimistic about the future.