Many people would agree that stress is a major problem in modern life. It is certainly true that worry and quarrel can cause all kinds of illnesses, __21__ backache to severe headaches, or even more serious complaints such as high blood pressure. Many of us think __22__ stress as something that other people impose on us. We often complain about how other people put us __23__ pressure. But we should try not to let such pressure affect us. We should not forget that we are largely responsible for some of the stress ourselves. We sometimes take __24__ more work than our bodies and our minds can handle. We should learn to __25__ our limitations. We should be aware of which things are really important and which are not.