Be merciful, just as your Father is merciful.
(Luke 6:36 ESV)
I was reading today that the call "to be perfect just as our heavenly Father is perfect" (Matthew 5:48) compares to being merciful. God's perfection reflects His character, which is "merciful and gracious, slow to anger and abounding in steadfast love." (Psalm 103:8)
Perfection, which means moving toward maturity and completeness, seems more attainable in light of mercy. This added nuance of becoming merciful feels more practical. I can get a handle on being "slow to anger and abounding in steadfast love."
I'm not saying it's my natural tendency, but becoming more like the God of mercy and love seems more likely than attaining a flawless life.