Faith, trust, conviction, and forgiveness are gifts from God through Jesus via the Holy Spirit. None of these are generated by us, but ARE given to us by God. [Source: In-Touch TV 3/27/2016]
Forgiveness cannot be earned by demonstrations [even sincere ones] of repentance. We ask for forgiveness with sincerity and He forgives us because He wants to do so.
If we backslide or sin, we should ask for forgiveness and accept such from God. If we repetitively sin, we eventually backslide a step at a time until we are so backslid-den that we lose our souls if we do not become convicted and repent prior to death in the flesh.