Some people have tried learning Mussar or Chassidus, seemingly to no avail. They may find this posting helpful.

The Chofetz Chaim zt”l once said: “Mussar is like a healing ointment applied to the body. Although one application sometimes suffices, the doctor will often prescribe many applications. Only then will the patient gain relief from his malady. So too, when the soul is submerged in materialism all crooked ways seem straight. One therefore needs to keep applying the appropriate spiritual remedy until the soul is healed.”

The Chofetz Chaim continued, "This reflects what I heard from a certain Gaon. He said that if one constantly speaks of teshuvah, he can hope that one day he will actually find his way to actual repentance. However, one who rarely speaks of teshuvah is likely to live out his entire life without repenting."
May Hashem grant us true repentance!