Are you at the place that you feel like you're drowning? Don't despair, you are not alone. Homeschooling is a great endeavor, a worthy cause, and a wonderful investment...but it isn't a bed of roses. You are with your children all day every day, and sometimes that in itself can be overwhelming. Homeschooling is filled with built in pressure. We, as parents or guardians are automatically under pressure to "make sure" that our children are understanding and getting what they are supposed to be learning. It isn't easy, but don't despair. You are one of the few people in the world that knows your child the best, and because of this you are best able to meet his/her needs.
At times I have felt completely overwhelmed. It is during these times, that I have stopped what I was doing and took a few days off. Declare a holiday until you are in a better mindset. (Hopefully that won't take all year! :)) Take time to take inventory of what you are doing...is it unrealistic... is it just too much...can you adjust your schedule to make more time for non-stressful things... do you need to find a different homeschool curriculum that may alleviate the stress... Don't just let the stress eat you alive, try to get rid of it. Find a way to eliminate the things that are causing the issue. As you work through this, allow yourself time to heal.
Once you are able to find a more appropriate schedule or curriculum, jump back in. After a bit of rest, and a new schedule you may just find you are ready to go again!