I’ve actually tried dopamine detoxing especially last year, I deactivated all social media accounts, etc.
It’s great! For the first month, I’m productive and peaceful.
Then comes all the grave feelings of emptiness, loneliness, and with the stress of my work they amplify and turn into something ugly.
But does the return to certain entertainment items actually make you feel better? They do have some value, but this has to be balanced with their cheap quality. I don't believe all digital entertainment must be trashed, but we have to be aware how it can create false rewards. While they may satiate part of what we are looking for, their low quality doesn't give us the full fulfillment we are desiring.
Try to think about what you are seeking out here: For example, if you wish to talk to people and this drives you to social media, try to push for more in-person or other more-engaging means of talking with others, avoiding social media doom scrolling or like-farming.
If you enjoy the construction aspect of a video game, maybe you would also enjoy construction of a physical item or puzzle, or use your discernment to pick games which don't abuse your dopamine. For example, avoid a mobile game, as they are usually terrible about this, but perhaps a computer simulator would be better.
Regarding porn, I agree that your situation is tough, however you can try to use less harmful methods of this. If not your imagination, then you would use just a still image, and so on. All of this is easier to handle for the brain than binging 10 different HD videos.
Dopamine detox is about tolerance management and although this helps, it doesn't fully solve what we are missing, if that makes sense. Look at your Sun sign, aspects, and 5th house to see what is truly fulfilling to you, then try to find constructive ways to achieve this.
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As others had stated, it appears your issues relate to a lack of fire. Remember that the Sun pertains to happiness, fulfillment, and creation of value. It also pertains to digestion because this is the physical manifestation of "creating value" from food. If your digestive fires become physically weakened, this can sap your appetite to the point where you only want cheaper carbs.
Do you see the relationship with the above entertainment here? With more solar power, we are able to "go bigger" and push for more, but with less, we may be inclined to go for a cheaper solution, as if we are missing the fuel to go further. Regarding food itself, healthy carbs like potato or carrots would be your friend here, as it is easier for your body to access this sugar, but it won't hurt you like other junk food will. There is even research on sweet potatoes being used for treatment of diabetes, and the physical structure looks similar to our own spleen.
Regarding sexual power, this comes from our martian energies, which can certainly become sapped if you are undergoing periods of high stress. Here we can see the importance of maintaining our energy and it is sad that our world does not respect this properly, creating conditions of exhaustion and fatigue.
My advice would be to build up your energy gradually. For example, when you are dead tired, maybe just do the breath of fire. Once you feel some motivation restored, you can switch to a Solar KriyaExternal ↗. Note, this can be modified to be much shorter, by dividing the times. The reason I would suggest these or similar exercises is because they are much shorter and easier to motivate yourself to perform, rather than a full routine.