I can't unbite what I've bitten off, what can I do?

Remember, everything you do is an example to your son, if he grows up watching you throw screaming tantrums over dog food, he will do the same and think thats acceptable. Work on keeping your cool, me and my husband work fulltime jobs, we have 4 kids, and Im pregnant with our 5th, I know its hard, but you just have to stop looking at it as hard and start looking at the positive things in your life, like the son and the brother you get in return for your hard work. Carefully plan your days so you have more free time to relax, work out time to just sit back with your family. When an issue comes up, dont freak out, thats not going to help anyone, just take a deep breath and work out a way to fix it. Cut back on your everyday tasks as much as you can, dont make extra work for yourself, for example, for your sons birthday just have a small thing with your family, just a dinner, cake, presents, done kind of deal, he honestly wont care either way and it takes away the stress of a big party. See if you can space your cles, like ones that you can take at a further time, and see if your taking any that are unnecessary.