Shaqiq al-Balkhi said:
The sign(s) of (true) repentance are:
Crying over what has passed by (of one’s actions),
fear of falling into the sin (once again),
boycotting evil company, and
accompanying the righteous.
[Al-Siyar of al-Dhahabib (9/315)] – salaf.com
The Method Of Making Tawbah – Fatwa
Repentance (Tawba) – by Dr. Saleh as-Saleh (Rahimahullaah) – Transcribed