Hi Sara! I know you have poured out your heart here, and here is a hug from me - HUG!!! You are not alone. I would go so far as to say I think we have all been there before. I know I have been discouraged and needing to make some changes to 'pick me up' before - walking alongside my parents in my Dad's battle with pancreatic cancer last year was tough. I think we all go through ups and downs emotionally, and sometimes that is just encouragement to do some reflecting and make some changes.
Your sharing you were reading parent help books and scheduling help books and first feeling inspired but then feeling like a failure hit a chord with me. I have a tendency to do this - to buy, read, watch, listen to some self-help type books and think I will have arrived at the answer, only to give it a try and immediately feel like a failure. I remember reading Elizabeth George's "A Wife After God's Own Heart" and being so inspired, only to find I couldn't live up to all that was suggested in that book and then feeling like a failure. I then read her "A Mom After God's Own Heart" and took the buffet approach to it. I chose a few things to do, a few changes to make, and I felt good about those. Still, not all were wildly successful. This will make you laugh - just last week I decided I should watch an apple tv Christian women's type devotional each week, as I was feeling like I should be a part of a women's group but have no time nor consistent childcare to go to one. I decided to watch an Elizabeth George one, because I do always like her books and encouragement (though they have, as I shared, made me feel discouraged at times too). In the one I watched, she suggested 'pampering my dh,' which I proceeded to do by making him his favorite breakfast, making his favorite coffee, hugging him, being as 'sunny' as possible - anyway, about the second day of this he didn't want the coffee, wanted to make his own breakfast, didn't have time for hugs, and when I asked him why he'd just left his coffee and not drank it, he said with big eyes, "What are you doing? I like to make my own breakfast, and I like to put my own amount of coffee in my cup!" I said teary-eyed that I was trying to pamper him. "Why?!?" he said. "Because I love you and that was what my women's devotional said I should do." He actually nearly shouted, "Well, I don't want to be pampered!!!" HIs eyes were kind of crazy and angry when he said it too.

I just laughed until I had little tears coming down my face. He hugged me and said he liked things just the way they were, and told me to STOP trying to pamper him. I wondered what Elizabeth George would say if she were in the room. I wondered if I was married to the only man in the world that does NOT want to be pampered. I don't think so though - I think there are probably other women out there that found the same thing I did. Probably everything in self-help type books needs to be taken with a grain of salt. I remember feeling this way reading self-help parenting books too.
So, I have some sort of off-the-wall things I'll share that have helped me.
1. Dating my husband once a week (even when we don't feel like, even when we don't think we have the money for it, even when he's been gone a ton)
2. Taking 1 day off a week from school (and not making it the day to accomplish the world)
3. Routine rather than schedule (put it to paper, but make the times be less important than the routine). Stick to a start time and an end time, so you all know when to start and when school is done. Use the suggested time allotments as a starting point, and add in some grace periods that allow you to catch up when all doesn't go just so. Hop in and help if things are going long and a child is stuck. Clip along. Be brisk. Every homeschool moment cannot be a Hallmark moment.
4. Enough rest - get to bed on time - everyone, especially you!
5. Respect - require it from your son, have him treat you like you'd expect him to treat his teacher in school. Be clear about what you expect him to do and don't accept whining or complaining. Put him in the corner in a time out for 5 minutes every single time he is disrespectful at first and set the timer; 5 minutes seems long, it will do the trick. If he comes back still whining/complaining, back to the corner. I haven't done this for years and just had to again with my youngest. 3 times and he was the model child the rest of the day. Think of it this way - YOU deserve respect just like any teacher he had would deserve. His future wife will deserve respect too. Discussing it doesn't tend to work with boys, though I surely have tried that to its fullest.
6. Enlist help - require your dc to help with picking up, simple chores, watching younger siblings. This is not mean, this is expecting them to be a contributing member of the family, which they will need to do as an adult dh too.
7. One fun thing - give yourself permission to have 1 fun thing or 1 thing that makes life easier every day. A hot bubble bath, a phone conversation with a sister, a good cup of coffee, a short nap, a walk around the block, a little candy bar, take 10 minutes longer to really look your best when getting ready, paint your nails, use paper plates for a meal and throw them rather than do dishes, have a box of donuts for breakfast so you don't have to make it, throw a picnic blanket on the floor and have brownies with the kids, watch a movie you love (even it is by yourself), have your dh watch the kids and meet someone for coffee, or if there is no one to meet (as has been the case in my life at times) then get in the car and drive to get yourself a coffee and a good magazine or book to read somewhere.
8. If ds or dc are not responding to the above time out after consistently doing it, take things away. Computer time, video/dvd time, earlier bed time, favorite toy or pastime. These things are at your disposal as a parent. Things you lovingly provided that can be taken away until behavior changes. And all the while let your ds know you love him, but that in the real world, men with real jobs can't whine or complain their way through what they don't feel like doing, and at home, he can't either.
9. Stick close to God. Pray when you can - in the shower if need be. Listen to praise music while you do dishes. Read a short devotional in the morning or just 1 Proverbs or Psalms, and think about it off and on throughout the day. I have found God can be with me all day, and though it is best first thing, if it is not the first waking hours every day, then the rest of the day I can't feel guilty but must walk with Him all the more in thoughts, prayers, music. At least with HOD, I can take in my dc's Bible study and devotions during the day and meditate on that.
One last thing... this is MY self-help list. As such, you won't do everything on it, everything on it won't work for you, everything on it won't be a win, and that doesn't make YOU a failure. It makes this list imperfect, and it is because it is written by an imperfect person (a.k.a ME

). This too shall pass dear friend. But in the meantime, have a little fun and lay down some expectations along the way. Life is meant to be lived today.
Love in Christ,
Julie