Mental disorders is a broad field, what disorder do you have exactly? At what level does it affect your life?
If you are interested in spiritual Satanism and have not yet dedicated your soul, do so for protection because mental disorders make you open to attacks and to behave destructively towards yourself, these things are not joke.
I have already mentioned several times in the forum, with the guidance of the gods and with your effort, any mental illness can be cured. I had severe schizophrenia and my behavior was very destructive, I managed to get out of it after less than a year of work on my soul. It was difficult because of all the backlashes of the work on the mind, because it might feel worse, but in the end peace of mind comes.
Start with runes like wunjo and a strong cleansing of your lower chakras and with mantras like satanama to balance the mind.