[boatbums]

Tense: Present
Voice: Active
Mood: Imperative

1) to change one’s mind, i.e. to repent

2) to change one’s mind for better, heartily to amend with abhorrence of one’s past sins

“Repentance (metanoia, ‘change of mind’) involves a turning with contrition from sin to God; the repentant sinner is in the proper condition to accept the divine forgiveness.” (F. F. Bruce. The Acts of the Apostles [Greek Text Commentary], London: Tyndale, 1952, p. 97.)

[Daniel Gregg]

I don't see a problem with your definition of repentance:

2) to change one’s mind for better, heartily to amend with abhorrence of one’s past sins

Clearly that means one will turn away from sin, and keep turning way from sin that comes up in life