There are plenty of ways that anxious states take their toll on everyday existence. One of the most common is the loss of sleep. Many people who are worried will also find it hard to drop off at night as their mind is constantly whirling, often focussing and refocussing on some specific issue that is causing concern. This will tend to cause tiredness and irritation the following day, which can, in some cases, also create more worries which then affect the next night's sleep. This is the cyclical nature of anxiety, so you need to break the chain somehow, perhaps by addressing the root cause of the worries or taking time out to relax more fully. Many people report that feeling anxious will make it harder to focus and, in some cases, create problems with recall. Prolonged periods of worry may also have a negative impact on self-esteem, something which, once again, can cause more worries to mount. Finally, some people who are concerned about something they cannot put their finger on will explore it through their subconscious in the form of dreams and even nightmares.