"Complete abandonment" refers to the act of totally giving up or leaving behind someone or something. It implies a total lack of care, support, or involvement. Full definition
No matter how it's sugar coated, what you are speaking of is total and complete abandonment of the intellect as well as a refusal to accept responsibility for your own life. (nakedpastor.com)
In our lives there should be that longing to meet God in complete abandonment so that we can love him alone. (faith.org.uk)
What a serious imbalance will bring on can be almost complete disillusionment and a loss of your sense of purpose which can cause complete abandonment of ones dreams. (activatemychakras.com)