As I said, speaking of completely and deeply enough, is another form perfectionism, which is not the commandment of God.
We are called to His glory
and virtue. That is not His glory on the throne, where He cannot be tempted. Jesus could be tempted, and so we are not called to His glory on the throne, but to His glory and virtue in the flesh, which is simply purity in heart, not perfectionism.
Here is an example of perfectionism that is not real, nor taught by Jesus.
We are told to forgive as God does from the heart, those who confess and ask us for forgiveness with godly sorrow.
There is no forgiveness for anyone who neither confesses nor cares for it, neither from God nor man.
And so, by the love of God we don't allow ourselves to become bitter and destroy our own hearts and lives with it.
And if the offender were to come and confess with godly sorrow, seeking my personal forgiveness, then yes I would. Gladly. From the heart, and not just for my own soul's sake, but for his or hers. And yes, I have done so, and I would for another if they came and asked.
And so you see, we are not called to perfectionism, but simple virtue of Jesus, which in the flesh is the glory of God, and glorifies God.
Being tempted with unvirtuous thoughts is not a sin, and casting them aside is glorious to God on the throne.
I am not teaching on how to sin with grace. We leave that to OSAS. I am only counselling on how to know the difference between the conviction of the Holy Spirit, and our own guilt-trips, because we think we are supposed to be more perfect than Jesus was.
Jesus has every vile thought the devil ever through at man, including on the cross. He just took none of it to heart to lust for it and do it.
So, we don't judge ourselves by unworthy thoughts tempting us as Jesus was, but judge rather this: we don't accept them from the devil to do them, just like Jesus did.
The only difference between Jesus in the flesh, and His flesh and bones today, is that we have accepted them to do them. He never did. And so we need forgiveness of God and a Savior from sinning. Jesus didn't.
In the end, if you feel the need to confess to Jesus for forgiveness for whatever thought you may have, or idle word out of your mouth. Then, by all means do so.
I suppose Jesus would rather have us bombarding Him with unnecessary confessions, than not.
Although, aren't there comedies made about those who say they are sorry too much?