First of all, being depersonalized does not mean you are psychotic, nor does it mean you will become psychotic. Depersonalization is only a manifestation of anxiety, an innocent emotion skewing your outlook on life, and that is why you want to be addressing the underwriting anxiety to rid yourself of the dissociation. Fortunately, there are plenty of techniques that will allow for a complete recovery and these are the ones I found most effective:
Identifying the sources – although anxiety is mostly an irrational feeling arising from neuro-biological malfunctions, each of us will have some environmental and chemical triggers such as talking in public, exploring new territories, drinking alcohol/coffee, smoking tobacco, and many other subjective experiences. Each of us will have a different set of these irritants and since it is important to localize them so you can address them properly. Gaining a general idea about what anxiety is, how it presents itself, and its mechanism of action can be tremendously helpful in treating anxiety and so treating depersonalization. By adopting this approach it becomes easier to distinguish your anxiety from your true self, which is an essential step to recovery.
Exposure therapy – facing the environmental triggers of your anxiety you have successfully identified does sound unpleasant and may seem counterproductive at first, but the long-term consequences are worth the initial dismay. What exposing yourself to trigger-situations such as being among crowds of people does is desensitize your angry responses, historically allowing you to thrive in a previously feared, aversive situation. Start low, with the slow introduction of the trigger (s) if you feel like it is too much to handle and once you gain confidence to step it up a bit more again.
Occupying your mind – you might have noticed that anxiety takes the most advantage of you when you let your mind wander, inviting unpleasantly intrusive thoughts to your consciousness. A great remedy for this problem is to invest your focus into some form of an activity, be it playing the piano or going for a walk on a warm, sunny day. Engaging in activities consumes your thoughts and focus leaving no space for anxious thoughts, additionally, you do something productive and that feel good about self.
Implementing the above-mentioned techniques and adhering to them is among the most efficient panaceas in defeating anxiety, the true culprit behind marijuana-induced depersonalization. From my experience, resorting to prescription medication tends to impede the whole recuperative process, albeit they can be useful in emergency situations. These 3 techniques have been a great help to me in overcoming my depersonalization and there are much more which might just do the trick. I have included, in the resource section, a link to a long list of such techniques so you can pick whichever appeals to you the most. The techniques that worked less for me might work best for you and vice versa, so I encourage you to experiment. Now go ahead, engage, and enjoy returning to your old self!