Cannabis reaction. Is ruined my life?

Based on the information that you have provided, it is very important that you consult a psychiatrist locally near your city as soon as possible. Cannabis use can affect mental health and can cause amotivation syndrome , mood changes and psychotic symptoms as well. Certain symptoms of feeling scared and feeling lost in the world and feeling exhausted and feeling like walking in dream world which you mention reflect that the cannabis use has affected your mental health. Kindly do not feel helpless or guilty that there is no hope. What has happened has happened and one cannot reverse the past. But one can definitely take positive steps in the present so that we can look forward for a better future. Kindly consult a psychiatrist near your city who can clinically evaluate you, suggest you certain medications for your symptoms and counsel you as well regarding your problems and help you cope better and teach you positive mental health strategies to deal with your problems