Being fully surrendered to God is not a one and done decision, though it begins with a conscious determination and willful choice to be dedicated and lovingly abandoned to Him and His will.
Like any other commitment in life, it requires daily and continual focus and intentional determination and yielding.
There is a fresh move of the Spirit across the earth, and it is drawing men and women, boys, and girls, to full surrender to the Lordship of Christ. None of us have arrived at the perfection we are capable of in Christ, but there is a difference between just getting by and full surrender.