Is “Let Go and Let God” actually bad for the Christian?

let go let god
You may have heard the rather pithy sounding phrase “Let Go and Let God” from inspirational calendars or as an off the cuff comment in a sermon, but do you know what it implies or where it comes from?

The phrase was coined as a catchcry for what is known as Keswick Theology which was formulated in the late 1800s in an attempt to spur the church onwards toward what they called a higher life.