I can totally relate to what you're saying. Sometimes it's easier to be angry about the situation... and wallow in that whole "God DAMNIT this SUCKS" mode for a while. I believe that it's natural to oscillate between happiness and unhappiness, peace and frustration, etc. POIS is a fucking devastating disease. I don't blame anyone for getting a little ancy once in a while, especially when there is so little understanding coming from other people.
But obviously, it takes a toll on your relationship with your family... I know my relationship with my parents is strained for sure! It sucks... I SO wish I could just be a happy, well-adjusted, grounded man again, and spread good vibes with everyone I meet. Alas, it is nearly impossible for us to maintain that composure... social anxiety, brain fog, irritability, and depression take hold, and there is nothing we can do about it other than "wait it out!"
Anyway... Welcome to the forums, sleepy!
I wouldn't worry too much about the psychological guilt being the cause. I'm sure there are LOADS of people have that psychological religious guilt, but NO physical symptoms of POIS. Just like there are many of us who have NO guilt, but plenty of physical symptoms.
Try to stay focused, and keep searching for things to help you get through the day. Here are some of my personal remedies:
1) Abstinence
can't really beat that one! If you can discipline yourself to abstain, you can pretty much avoid most of the ill effects of POIS.
2) A clean diet
almost every one of us POISers has digestion issues... and some speculate that there is a connection. Eat whatever works for YOU... be it Paleo, no Gluten, no Dairy, Raw Vegan etc..
3) Daily exercise
just get outside in the sun and the fresh air, and work up a sweat! I find this gives me an energy boost for the day, and extra mental clarity.
There are plenty more tips and tricks people have found to work for them, but it's best to just scroll through people's personal threads!
-Ian