A priest-friend sent this in from a twitter account. So, we have an analogy: This is the image of the fall of a venial sin in which we are nevertheless still assenting to being dragged to heaven by our Lord (via Calvary and the Cross). A mortal sin would be to jump off altogether in contempt.
Saint Thomas Aquinas speaks of repentance from a mortal sin, whether one can, as it were, jump back on where one left off in the spiritual life. He answers that, yes, this is possible, depending on one’s contrition, one’s purpose of amendment, the grace of God’s charity to which one assents in order that this contrition is brought to fruition with the indwelling of the Most Holy Trinity. It does, in grace, also depend on our generosity in following the grace being given. What would prohibit this assent would be presumption, lack of contrition, lack of firm purpose of amendment. But, all things being equal, as it were, yes, one can come back into God’s good friendship, whether a bit diminished, whether pretty much the same, whether far advanced. But NO presumption, with contrition and purpose of amendment being necessary.
Tangled webs can be woven. But tangled webs can be broken. Sometimes things are difficult.
Confession brings things back in good order. Sometimes we need the help of others, of the Church, of Jesus. Find a good confessor.