P. Andrew Sandlin writes,

“A too little appreciated benefit of justification by faith alone is that it liberates man to fulfill his calling in the earth without introspective obsession over his eternal destiny.
If you’re forever anxious whether your good works will be sufficient to merit eternal life, whether you can forfeit your salvation, and whether you’ve done enough to win God‘s favor, you’ll have time for little else in life.
But if you stand boldly in the confidence of the imputed righteousness of Jesus Christ, you are set free to fulfill your calling in conquering your area of the world for Jesus Christ.
There are few biblical doctrines as liberating as justification by faith alone, and not just liberating from the penalty of sin.”
Be liberated from introspective paralysis, imposter syndrome, regret, insecurity, and anxiety.
Be completely accepted by God as a free gift, freely received, locked in, bear-hug-secured by even the weakest of faith.
Then charge forward, blast ahead, sprint onward, Hulk-smash your sin and put the petal to the metal for the kingdom of God.