Steve, you're amazing, if anyone has the strength to persevere with something it must be you.
My first thought was wondering whether your family feel disconnected from you, or if they can feel your sense of disconnection.
I'm sure they are supportive, but maybe that's because they respect you and the decisions you make in your life, not because they agree with you continuing. I'd guess you will have discussed this with them, but if you haven't, why not work out what you should do with them, I'm sure it would give you the strength to stop or continue, as a family, not just you undertaking something alone.
I believe there are other more harmonious ways to achieve physical/spiritual benefits than by juice-feasting. It suits some people, but by no means all, the trick is discovering one's own best way, if it's not your way, then why waste any more time with it, just move on to what is more important in your life.
I'll say I have a slight bias here, in that I'm not overly inclined towards the use of supplements (especially hyped up things like MSM etc) under the guise of it being a way to health, juice-feasting is complex and as you seem to have found not particularly inspiring to undertake.
A quick request for 'intuitive guidance' might be a good idea, if you know you can trust the answer.
