You long for your bed all day long. At work you sometimes have trouble keeping your eyes open, but as soon as you lie in bed at night, you seem awake again in one fell swoop. How is that possible?
Feeling awake as soon as you are in bed is a common sleep problem. In many cases, it is because your brain has unconsciously started to associate your bed with being awake. This can happen, for example, if you have had trouble falling asleep for a while. When you toss and turn night after night, the link between your bed and sleep fades in your brain. That can become a vicious circle.
You can also suddenly suffer from a sleeping problem, for example due to stress, death of a loved one or heartbreak. Worrying messes up your sleep patterns. And even then your bed can evoke more and more different feelings instead of 'sleep'.
You can break the vicious circle by using your bed only for sleeping (and for sex). Can not you Sleep? Get out of bed after twenty minutes instead of continuing to turn. That way you train your brain to reassociate your bed with sleep. Cognitive behavioral therapy is also sometimes used to remedy sleeping problems.