Why do I feel like I'm not alive or that I'm dreaming?

I often feel this way when I am stressed or because I feel like I was to dissociate with something. Perhaps there is something subconsciously stressing you? In these times I normally try to self reflect, eg. spend time relaxing. This can be in the form of reading,writing,walking,a coffee anything that relaxes you. When the mind is still, that is normally when things become clear. THis can also be a sign of exhaustion or sleep deprivation. Are you sleeping enough or is the quality of your sleep up to standard? Are there tiring things occuring in your life eg exercise or studying?

An out of body experience can be an indication of an underlying health issue. It might be a good idea to consult a physician to rule it out.

From my experience, it may be from a lack of sleep. I know exactly what you mean- I'm dealing with it right now as we speak. Depression can be a factor in all of this. It can make you sleep much less or much more than usual... You might even have insomnia. If you suspect you do, you can talk to a doctor and might even get medication for it. Lack of sleep, much like insomnia, can make you hallucinate and feel like you're stuck in a dream state. I'd suggest picking an earlier bedtime, or even getting an aromatherapy lotion for sleep. The trick with the lotion is put it on at the desired time for sleep... If it isn't sleep, it may be adhd. Adhd can make you feel like you're always daydreaming, among a lot of other things. If you suspect you have it, contact a doctor. It is not life threatening at all. They will, however, give you medication to control it. It will not go away, but the medication will control it.

I asked that question a while ago. So I webMDed it. It is called Depersonalization/Derealization Disorder. Many people have experienced for a very short period of time due to sleep deprivation. It is not good or bad. It is what I call NUMB-AH-STAY. The feeling of numbness...stays longer than you want it to be. You can find books on this kind of condition. And lots of people have posted videos on Youtube talking about the condition. I read some books and watched some videos. What I got...was not being too obsessed with it. The condition may not go away easily. Well, mine is still with me. Trying hard to get rid of it is like trying hard to pick a boogie out of your nose. If it is not coming out, it is not coming out. Let it be. Go and live your life as lively as possible. (I am not giving advice. I am talking about my experience only. We are sharing.)