You could suffer from prosopagnosia, i.e. face blindness. Face blindness typically affects recognizing others, but some individuals might have a specific subtype or related condition affecting self-face recognition. Alternatively, damage or differences in specific brain regions (like the temporal or parietal lobes) may selectively impair self-image memory. You should consult your medical doctor for a proper evaluation and confirmation regarding this, if you believe this to be the case.
The brain processes self-recognition differently from how it processes the recognition of others. For example, the fusiform face area (FFA) in the brain and right hemisphere regions are involved in facial recognition, the right inferior parietal cortex and prefrontal cortex are more active during self-recognition. A disruption in these specific circuits might explain why self-recognition is harder for you. This can be healed over time by connecting both hemispheres of the brain through the Sun/Moon Meditation and working with your upper chakras. Additional workings can be done to further rectify this. You could do
Valefor's ritual and ask him for guidance.
On another note, you may simply suffer from a condition called aphantasia. Aphantasia is a condition where people cannot form mental images in their mind's eye. If you have difficulty visualizing anything, not just your own face, then it could be an indicator of this particular condition. Some people with aphantasia report being able to recognize others but find it hard to recall or visualize their own appearance without a mirror. Aphantasia can also be fixed through consistent work upon the soul and mind. Through Yoga, for example, you will expand your mind and open up your Nadis, which is very helpful in this case.
Consistency in spiritual practice is the key to addressing the issues mentioned above. Yoga, particularly the Eight-Fold Path, is highly effective for this. Since the nervous system is delicate, it's important not to overdo power breaths, but through consistent work, you will gradually build and adjust. This will enhance your bio-electricity, strengthen your body’s healing abilities, and ultimately help resolve these challenges.