thanks everyone

and thanks Zhilan and Rowan for helping me understand the EO view better..
I guess where I'm confused is this..
let's say I committed a terrible sin and I feel really sorry for it, and I go to confession, and it's absolved. The way I understand it, my soul is then clean and I can go and receive the Eucharist. If I have an attachment to a venial sin, a sinful habit, or if I'm sinning involuntarily (Zhilan, to answer your question, this is possible according to Catholic theology, but it would be venial not mortal sin), then I can confess this too and receiving the Eucharist would give me the grace I need to overcome the sinful habit. The only reason I wouldn't be able to receive Communion worthily is if I am not repentant...if I'm repentant yet haven't fully overcome that habit yet, perhaps the Eucharist would help me. So in this way, someone could be a terrible broken sinner yet - still receive the Eucharist worthily as long as they're really repentant and are asking God for the grace to improve..
So in my mind the only way receiving Communion could be harmful to your soul is if you're not repentant, or if you have unconfessed mortal sin, or if you don't have the desire to improve and simply don't care about your sins. As long as you care, no matter how messed up you are, God can use that and 'will not reject a contrite heart'...
based on what I have read in the Saints, whenever someone wanted to abstain from Communion because they felt there was too much wrong with them, their spiritual director would always urge them to receive as long as they've been to Confession and are repentant.
If someone is not at peace with their neighbour and they're about to receive Communion, I think it's a good idea to make peace, or pray for them.. maybe that's why we pray the Lord's prayer before Communion, which includes "forgive us our sins
as we forgive those who sin against us". And then we give the sign of peace to each other - maybe for reconciliation as well..
of course if someone is in a state of mortal sin they can't receive Communion, that would be bad for them and downright dangerous spiritually - as St Paul warns.. one could even get sick or die. Yet if someone HAS been to confession and IS repentant..then aren't all the conditions met?
I guess that's why I'm having trouble understanding the EO view..
if someone could help out that would be great. I've understood more of it though from your posts
I don't think you will find a Catholic priest gives out non Communion as a penance to often. I know years ago I reframed from communion volunatrily during a daily Mass and the priest after the Mass asked why I did that, and I said, I think I needed to and he said, NO! we need the grace and strength from Christ to battle the flesh or something to that effect he said.
essentially thats what I'm trying to say too..
btw. someone mentioned counselling - based on what I heard, at my parish there's two 'types' of confession.. you can either be in the confessional, behind a screen, or face to face with the priest. In the confessional, you basically just say all your sins and then are absolved. But in the other type, I heard the priest (my priest at least) talks to you and gives you guidance, and you can even stay there for half an hour if you want. I don't know how it's like in other parishes.
You're right in your understanding of it. That's pretty much how we view it. It's not meant to be a punishment, but its seen as protecting your soul because you would hurt yourself more if you were receiving when you weren't spiritually ready.
I agree about it not being a punishment

I guess what I'm confused about though..is, wouldn't you not hurt yourself IF you're repentant? it seems like maybe the EO have more conditions that must be met for Communion, am I right? (or have I misunderstood).. in the Catholic Church, you would only hurt yourself if you're in a state of sin. If you've been to confession, have no mortal sin, and are repentant for all your known and unknown venial sin and want to follow God.. then He comes into your heart in the Eucharist and gives you grace to live better according to His will..and fight your sins...? just trying to figure it out..
Also, if you were under penance, you would also be under spiritual direction, it's not like the priest says "get lost for a year and come back when you're more pious"

God bless