It never stopped Dh, and he was so ill he tried to end his life at one point
Isolation is scary, your LO's are small- what's the Irish provide in the way of family support? Sorry, I know it well in britain (used to work in field) but not there. Is there any equivalent to HomeStart (or do they operate there? They were looking into it, though probably not widely available)
You need to start building relationships. Its hard, but a support network is so important for your own self esteem. Or could you go back home?