Keep growing in prayer, especially the Sacraments, and recognize that as you grow in holiness, Satan will attack you harder because you are becoming a greater threat to his influence over people.
Please consider praying for me because I too struggle with dispair.
Sometimes I will gravely sin, but Reconciliation services are cancelled for the week, so I repent privately until I have the opportunity to reconcile. What happens is that during the time of private repentance, I don’t feel any temptations to sin, and as soon as I receive the Sacrament of Reconciliation, that day or the following, temptations will be on the rise.
Well in that time of private repentance, I am out of purity and oneness with God, and I am no longer a threat to Satan. However, during the state of pure holiness after Reconciliation, I am a threat.
Please offer your dispair up to God for the conversion of lost souls.