Allah is the only One Who knows one's inner self
Reference: qsep.com
Q. Is Allah the only One Who knows my inner self?
A. Allah (Glorified and Exalted be He) Alone knows what lies in the recesses of the inner self and all thoughts, secrets and obsessions that preoccupy one's mind.
Allah (Glorified be He) says:
And if you (O Muhammad Õáì Çááå Úáíå æÓáã) speak (the invocation) aloud, then verily, He knows the secret and that which is yet more hidden.
(Surah TaHa, 20: 7)
Allah (Exalted be He) also says:
Is not Allâh Best Aware of what is in the breasts of the ‘Alamîn (mankind and jinn).
(Surah Al-`Ankabut, 29: 10)
And:
And Allâh knows what you conceal and what you reveal.
(Surah Al-Nahl, 16: 19 )
And:
He knows what is in the heavens and on earth, and He knows what you conceal and what you reveal. And Allâh is the All-Knower of what is in the breasts (of men).
(Surah Al-Taghabun, 64: 4)
Allah also says:
And your Lord knows what their breasts conceal, and what they reveal.
(Surah Al-Qasas, 28: 69)
Thus, anyone who claims knowledge of people's inner selves and what they conceal has contended with Allah (Glorified and Exalted be He) in His Lordship and this is Kufr (disbelief) which Muslims should beware of.
May Allah grant us success.
May peace and blessings be upon our Prophet Muhammad, his family, and Companions.