ANSWER:

Those who fall in such sins and not pay any attention or show any remorse, such people have hearts that were sealed because of their sins.

How to feel ashamed , regret , or guilty so not doing sin again ? cause i feel like many people still doing sin although they know it’s wrong, and the reminder is near too like close to masjid but still doing sin or they do all wajib prayer but still sinning. I afraid of something like that, cause many people doing wrong and brush it like that