What should I do about the insomnia I've suffered after attending a jinn exorcism session?

We advise you to recite abundant adhkar (remembrances) and supplications for protection (ta'awwudhat) that are authentically transmitted, for the tranquility of the heart. Among them is the supplication: "O Allah, I ask You for pardon and well-being in this world and the Hereafter. O Allah, I ask You for pardon and well-being in my religion, my worldly affairs, my family, and my wealth. O Allah, conceal my flaws and calm my fears. O Allah, protect me from before me, from behind me, from my right, from my left, and from above me. And I seek refuge in Your greatness from being unexpectedly seized from beneath me." Also, recite the Mu'awwidhat (Surah Al-Falaq and Surah An-Nas) and "Qul Huwa Allahu Ahad" (Surah Al-Ikhlas) three times in the morning and three times in the evening.