The slothful and accidic are often builders or the partners in the building of their particular sinful hole but simply pointing out their responsibility, to me, doesn't seem that helpful. It would be a little like Jesus going to the man by the pool, yesterdays Gospel. and simply telling him he was the author of his own misfortune and telling him to 'pull himself together' and get one with life.
Grinding a sinners face in his sin doesn't help, Jesus is always merciful, and more gives hope.
With my parishioners I tend to regard sloth and accidie as being the result of having a particular personality type: a tendency to depression, and a lack of inspirational leadership, often on my part. Between that their lies an inability to grasp the full implications of the Gospel, or often a confusion about what is Christian teaching but the real reason is a loss of hope, and yes a weakness of faith and charity, It comes from a self destructive coldness heart, a failure to appreciate God's love for oneself and to love oneself because God first loves you.
“I think of many Christians, of many Catholics: yes, they are Catholics, but without enthusiasm, even embittered. 'Yes, life is what it is, but the Church – I go to Mass every Sunday, but better not get mixed up in things – I have faith for my health, I do not feel the need to give it to another...’. Each in his own house, the quiet life: but, you do something and then they criticize you: ‘No, leave it alone [It. è meglio così], don’t chance it.’ This is the disease of sloth, the acedia of Christians. This attitude that is crippling the apostolic zeal, which makes Christian people stand still and at ease, but not in the good sense of the word: they do not bother to go out to proclaim the Gospel! They are anesthetized.”The problem is, often, not the poor sheep's fault but the shepherd's. Frankly I think I am fortunate if I can get people even to the level "formalism", if they are coming to Mass, then maybe, just maybe Christ or the apostles might pass by and heal them.
There was a time when seminaries and convents were full, when many lay people were actively involved in the mission of the Church, the sloth and accidia we see around us seems to be deeply ingrained in the Church of today.