There is information about self ruqya on the link below :
i have done self ruqya as well, but for different problems and the method is not too different from the link above
- - - Updated - - -
Hadiths about protection :
Narrated Abu Mas'ud Al-Ansari:
that the Messenger of Allah (ﷺ) said: "Whoever recites the last two Ayat of Surat Al-Baqarah during the night, they shall suffice him." (Jami'at-Tirmidhi)
Narrated Abu Hurairah:
that the Messenger of Allah (ﷺ) said: "Do not turn your houses into graves. Indeed Ash-Shaitan does not enter the house in which Surat Al-Baqarah is recited."(Jami'at-Tirmidhi)
Narrated Abu Huraira:
Allah's Messenger (ﷺ) said," Whoever says: "La ilaha illal-lah wahdahu la sharika lahu, lahu-l-mulk wa lahul- hamd wa huwa 'ala kulli shai'in qadir," one hundred times will get the same reward as given for manumitting ten slaves; and one hundred good deeds will be written in his accounts, and one hundred sins will be deducted from his accounts, and it (his saying) will be a shield for him from Satan on that day till night, and nobody will be able to do a better deed except the one who does more than he." (Sahih al Bukhari)
====You can say the above adhkar 100 times after salah Fajar and Maghrib
It was narrated that Abu Hurairah said:
A scorpion stung a man and he did not sleep all the night. It was said to the Prophet (ﷺ): So- and-so was stung by a scorpion and he did not sleep all the night. He said: If he had said, last night: Audhu bikalimatil-lahit-tammati min sharri ma khalaq (I seek refuge in the Perfect Words of Allah from the evil of that which He has created), the scorpion sting would not have harmed him, until morning. (Sunan Ibn Majah)
====You can say this dua to ask Allah protection from jinns because they are also Allah's creations.
Also this dua to seek refuge from evil : Rabbi auzu bika min hamazatish-Shayatin wa auzu bika Rabbi an yahdurun (23:97-98)
Yahya related to me from Malik that Yahya ibn Said said that he had heard that Khalid ibn al-Walid said to the Messenger of Allah, may Allah bless him and grant him peace, "I have nightmares." The Messenger of Allah, may Allah bless him and grant him peace, said to him, "Say, 'I seek refuge with the complete words of Allah from His anger and His punishment and the evil of His slaves, and from the evil suggestions of the shayatin and from their being present (at death).' "
Audhu bi kalimati' llahi't-tammati min ghadabihi wa iqabihi wa sharri ibadihi wa min hamazati' sh-shayatin wa an yahdurun. (Muwatta Malik)
Aban bin `Uthman said:
I heard `Uthman bin `Affan (ra) saying: The Messenger of Allah (ﷺ) said: There is no worshiper who says, in the morning of every day, and the evening of every night: In the Name of Allah, who with His Name, nothing in the earth or the heavens can cause harm, and He is the Hearing, the Knowing (Bismillāh, alladhi lā yaḍurru ma`a ismihi shai'un fil-arḍi wa lā fis-samā', wa huwas-Samī`ul `Alīm) three times, (except that) nothing shall harm him. And Aban had been stricken with a type of semi-paralysis, so a man began to look at him, so Aban said to him, What are you looking at? Indeed the Hadith is as I reported it to you, but I did not say it one day, so Allah brought about His decree upon me. (Jami'at-Tirmidhi)
Narrated Abu Huraira:
Allah's Messenger (ﷺ) ordered me to guard the Zakat revenue of Ramadan. Then somebody came to me and started stealing from the foodstuff. I caught him and said, "I will take you to Allah's Messenger (ﷺ)!" Then Abu Huraira described the whole narration and said: That person said (to me), "(Please don't take me to Allah's Messenger (ﷺ) and I will tell you a few words by which Allah will benefit you.) When you go to your bed, recite Ayat-al-Kursi, (2.255) for then there will be a guard from Allah who will protect you all night long, and Satan will not be able to come near you till dawn." (When the Prophet (ﷺ) heard the story) he said (to me), "He (who came to you at night) told you the truth although he is a liar; and it was Satan." (Sahih al Bukhari)
Whenever the Prophet (ﷺ) went to bed every night, he used to cup his hands together and blow over it after reciting Surat Al-Ikhlas, Surat Al-Falaq and Surat An-Nas, and then rub his hands over whatever parts of his body he was able to rub, starting with his head, face and front of his body. He used to do that three times. Sahih al Bukhari)
Avoid haram and increase your acts of worship. InshaAllah your self ruqya will be successful.