Let go and let God. You will sin again.
“Let go and let God” is a catchphrase associated with the old Keswick or “Deeper Life” movement. I’d run away from that and fast. It falsely divides believers into two categories, those who are merely saved and those who’ve received the “second blessing.” The Scriptures know of no such division.
Instead of fooling with Deeper Life thinking I’d get books on personal holiness from two dead men. I’d read John Owens’ The Mortification of Sin. And then from my old acquaintance, Bro. Jerry Bridges, there’s The Pursuit of Holiness and others.
Here are two articles on Keswick that I found...
http://www.ligonier.org/learn/articles/why-let-go-and-let-god-bad-idea/
https://www.gotquestions.org/Keswick-movement.html
All Christians retain their sinful predilections to some extent - the Good News is that God no longer recognizes them as sinners because their sin debt has been paid in full....