The mantra "Let Go and Let God" sounds good.
The problem, however, for many people is that this higher power turns out to be untrustworthy, unless we understood God in Truth, which is through the Bible and seen fully in His Son Jesus Christ.
I remember one member of AA, whose conception of God was badly shaken on 9-11.
"How could a loving God allow two planes to crash into the World Trade Center?"
Men must understood the power of God's Word and the covenants, which He cannot break arbitrarily.
God made a covenant with Adam, that if he ate from the wrong tree, then he and his descendants would surely die.
He ate, and he died, and to this day, men born from the womb are dead in their trespasses, until they receive Christ, believing that He died on the Cross for their sins and was raised for their justification.
Because Jesus died on the Cross, God the Father is fully and forever reconciled to the world (2 Corinthians 5: 17-21)
But if men and women do not believe on Him, then they remain dead in their trespasses and condemned (John 3: 16-18)
The world is still a fallen world, and the Holy Spirit still convicts the world of sin and their need for a Savior. Once a man is saved, passing from death to life in Christ Jesus, then the same Spirit lives in that person to convict him of righteousness (John 16: 8-11)
The same Jesus who died for us, who lives for us, also holds us in His hands:
"And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand." (John 10: 28)
There is nothing for us to let go of, because everything that we have, Jesus has, holds, and forever.
He has searched us and known all things, yet he does not cast us off. Because we are in Christ, we are accepted (Ephesians 1: 6), fully glorified, and invited to allow Him to live in us (Colossians 1: 27)
Instead of focusing in ourselves, our feelings, our frustrations, our hurts and fears, we are called to rest and recognize that we are in Christ, we have no further concourse with sin, condemnation, or death in our lives, and that He is working within us, to perfect the work that He started, and to work within us both to will and to do for His good pleasure (Philippians 1: 6; 2: 12-13)
Let Go of this silly "Let Go and Let God" concept. Jesus already has you in His hands, and He is not letting you go!