Before he sinned, Adam lived in harmony with God, but now that harmony was broken. Adam was a sinner, and could no longer have fellowship with his Creator. Because we inherit the same nature as Adam, we are also prone to sin. From our birth we are in Adam's family and inherit the effects of Adam's sin. We are dying creatures from our beginning and then make things worse by adding our own sins.
Men can do nothing to save themselves.
Saved By God's Grace God, because of His mercy and love, did not leave men to die in their sins. He provided a means of salvation, a way in which they could come to Him and have life. But a way by which His justice and integrity are upheld. God has provided all that we need for salvation, extending his grace and mercy toward us, willing to forgive us for Christ's sake. He has done His part.