Many of us become stressed by our inability to control the future. For example, you may be ruminating night and day about how different things at work will be once your boss retires. Or maybe you're on edge over the fact that you've only recently gotten into a relationship and you don't know if it's going to work out. Maybe your spirits are low because you've been looking to buy a house for some time now to no avail. If there's one certainty in life, it's that life is uncertain. The only constant in our lives is change. Rather than sulking about it, we have to roll with the punches. It doesn't benefit you to fear worst-case scenarios that may never come to pass. You can plan for the worst, yes. Just don't convince yourself that the worst is actually going to happen because that will only make you into a nervous wreck. If we do find ourselves in that situation, we deal with it at that point. But agonizing over it in advance will on...