Acrasia is a word used to denote the state of acting against one's better judgment. Strong's defines it as want of self-restraint : excess, incontinency. New Unger's states it is referring to an inability to restrain or having a "lack of self-control".
Fear as an emotional response to threats and danger is a basic survival mechanism occurring in response to a specific stimulus, such as pain or the threat of pain. Anxiety is an emotional state which typically occurs without any external threat. Additionally, fear is related to the specific behaviors of escape and avoidance, whereas anxiety is the result of threats which are perceived to be uncontrollable or unavoidable. Fear and anxiety about our finitude and the Malthusian theme of life create a state of acrasia; we live as physically vulnerable creatures in a Malthusian world. We are vulnerable and persuadable, powerless in resistance, in the same manner as Adam was - to 'sin'. Adam, however, did not 'sin' due to lack, fear or anxiety, the intrinsic factors, but because as a man created in the image of God; he had the desire to increase in knowledge of God and all that God had created; he had the desire to question, reason and investigate to the fullness of his capacity to understand all he could of God and God's creation; he had the desire to become as wise and powerful as God, (for knowledge is power), and be able to exist for ever, independently of God. Satan knew this. "Man is at the centre of this struggle (rebellion and independence) as a result of being made in God's image. Satan, the one who has sought the establishment of a different kingdom from that which God rules, has taken man, and all that he was made responsible for through creation, into bondage in the kingdom of darkness. The redemption of Christ is about the deliverance of man and 'nature' from this alienation and death." (Contours, p. 110) This does not impute upon God responsibility for our 'fallen nature', but it is implicit (entangled, woven, twisted together) in the defining of our free-will accountability and responsibility for our actions and decisions in light of cause and consequence.
The subsequent 'fallen nature' created the sense of lack, the fear and the anxiety associated with life as we know it. It is this life, this situation, this circumstance, this pain, this fear that tilts the mind toward selfishness, makes us competitive, makes us hoard, or preemptively attack. Death entered the realm of human existence and forced the realization of fear and anxiety as an everyday occurrence of life, creating the need to assuage those fears and anxieties and seek to create peace. We are faced with opportunity and propensity to 'sin'; "For all that is in the world--the lust of the flesh, the lust of the eyes, and the pride of life --..." are available and attainable.
Our mortality, that which brings us to face the scarcity and brevity of life; our existence, which brings us to face that life is paltry and insignificant; our purpose, which is illusory and minimal, these become sources of anxiety. Eccles. 2:16, "For there is no more remembrance of the wise than of the fool forever, since all that now is will be forgotten in the days to come. And how does a wise man die? As the fool! Eccles. 3:2, "A time to be born, and a time to die; ... " Eccles. 9:5, "For the living know that they will die; ... " This, coupled with the day-to-day struggles of fighting for, redeeming and consuming a combination of resources constantly being depleted in our physical, emotional and spiritual existence. Our futile attempts to defend ourselves and secure our safety lead us into active sin and estrange us from trust in God. We have to control our lives; we have to decide how our lives are to be invested; we determine what we will do and when we will do it; and we fail to give part and parcel to God; we fail to believe and trust in the Someone Who created this mess called life. "Sinfulness is more a result of mortality than mortality from sinfulness. To say that humans are 'conceived in sin' does not mean that some guilt or evil inclination is passed on to them in the act of their conception, but that what they inherit is a mortal human nature, which became mortal as a result of sin." We are biodegradable and we know that. We also know ...
" ... what I am doing, I do not understand. For what I will to do, that I do not practice; but what I hate, that I do." We are slaves to our 'akrastic' nature the absolute control of a tyrannical ruler, our own desires. "What I carry out I do not recognize in its true nature, as a slave who ignorantly performs his master’s behest without knowing its tendency or result." Even in the realm of the Kingdom, there are those who say as personal experience that this is ... "the unregenerate man’s experience, surviving at least in memory into regenerate days, and read with regenerate eyes" (Denney).
While here you may;
For soon as death
Has stopp’d your breath
Ye ne’er shall see a cheerful day."
"Of all who scorching Afric’s sun endure,
None like the swarthy Psyllians are secure:
With healing gifts and privileges graced,
Well in the land of serpents were they placed:
Truce with the dreadful tyrant death they have,
And border safely on (death's) realm the grave."