You feel that you're existing from other world and feels that it is part of your imagination? Feeling that you're inside a Virtual Reality (VR) and keep doing something yet a part of your mind saying it is not in a reality? Do you think that reality in only part of the representation of our naked eyes and some things are based only to our lucid dreams?
If you're experiencing this, you should know your physical and mental disorder.
1. Nothing.
Do not see symptoms online. Do not self-diagnosed yourself. It is imoortant to visit an expert rather to be practical in way that it may cost more than what you think.
Think before you feel.
Some feelings can be ignited by loneliness or frustration. You just want your whole life to be a dream or a test run and then you force your heart to believe it.