In His infinite wisdom, God allows trials in order to develop perseverance in us and to cause us to fix our hopes on the glory that is yet to be revealed... Our faith and perseverance can grow only under the pain of trial.

Evil Rulers Are Never Beyond The Bounds of God's Sovereign Will

The solution to staying on the right side of the fine line between using and abusing grace is repentance. The road to repentance is godly sorrow (2 Corinthians 7:10). Godly sorrow is developed when we focus on the true nature of sin as an offense against God rather than something that makes us feel guilty.

Only those who walk in holiness experience true joy.

I realize anew that, just as we must learn to obey God one choice at a time, we must also learn to trust God one circumstance at a time. Trusting God is not a matter of my feelings but of my will. I never feel like trusting God when adversity strikes, but I can choose to do so even when I don’t feel like it. That act of the will, though, must be based on belief, and belief must be based on truth.

Holiness is nothing less than conformity to the character of God

We don't have to start all over again and try to keep the slate clean. There is no more slate.