Damon Duncan teaches on "Repentance". True repentance involves a heartfelt conviction of sin... contrition over the offense... a turning away from the sinful way of life, and MOST IMPORTANTLY a turning toward Christ.
The Corinthians
"Godly sorrow brings repentance that leads to salvation"
"Worldly sorrow brings death"
David
He immediately went to God and worshipped
David loved God, repented of his sins, accepted the consequences of the sins, and continued to love God... he relied on God... he worshipped God continuously
Peter and Judas
Peter repented
Judas killed himself