Early in my conversion, and much more than I would have thought necessary at the time, I had to attend to the Sacrament of Reconciliation, and not only the Sacrament but other means as well of unburdening myself, from my own guilt and from my deep rooted resentments.
Followed by frequent Mass and the reception of Him in the Eucharist.
I pray for you and encourage you to seek a personal confessor, and others (if necessary) you may trust to pour out your feeling of anger, and sadness.
This feeling, for me, was like a cancer, that needed to be lanced over and over to get out the bad fluids within me.
I found this like a dirty ugly magnet that kept collecting criticism of myself and others and it seemed not the very moment it was cleared, I would collect more.
Get everything about you out to someone. I encourage you to do this as often as you need.
Peace in Christ.