It may be out of place cloudy, but I've learned to lied and pretend emotions of a "normal" people so its not that bad, at least for your close ones. From time to time i do lsd trip ~once a year and its helping to remind happiness. On the topic: if you can get over it just remeber stick to the "bright" and if something gets you to this state (person, job, games) leave them behind and never look back. You don't want to be on the end of a line