That's why we have Confession --- the Sacrament of Penance --- so they/we can prepare them/ourselves properly for Holy Communion. Repent, seek the mercy of Jesus, confess,with a firm intention of not continuing in sin -- - that's the touch one, for me as for anyone --- and then you can properly approach the Blessed Sacrament.
“with a firm intention of not continuing in sin — - that’s the touch one, for me as for anyone”
I think it would be disingenuous, for me anyway, to state that I have a “firm intention” not to continue in sin when after going to confession weekly my whole life - my sins are always the same. I guess that depends on what one’s definition of “firm intention” is...
The best I can do is to try to let my life be guided by the Holy Spirit. It would be my firm wish not to continue in sin, but the only way I even have a chance is through Christ.