The writing is on the wall.

I'm a 30-year old female, professional, college educated, married with children. I feel burdened by my rage.

You live a stressful lifestyle, even if you work your ass off and take care of a million issues that pop up in the day, there will always be more. The fact you say you're burdened by your rage and not your responsibilities means you're probably trying too hard. That rage exist for a reason, you're frustrating yourself with the battles you choose to fight. You sound like you have no safe retreat from the stress. I'm not talking about a place you can go, I'm talking about a state of mind you can rely on. Every time I get stressed out, I imagine the other aspects of my life that I consider good and fulfilling and then look at the issue from that perspective with some disdain creating a sense of detachment from the actual issue. Basically, what I'm saying is the next time you get stressed out, give up and be humble with yourself. To maintain your lifestyle requires a great deal of effort every day, it's O.K. to let go and even ask for help every once in a while. All problems and issues will be brought to a resolution with or without you interacting with them, life goes on with or without you so have patience with yourself and look upon these issues that end up being the straw that breaks the camels back in a manner of disgust rather than frustration. Nothing but mental and physical health matters at the end of the day, so be honest with yourself and focus on the basics and you'll realize that most day to day issues are menial.

Open up to your husband and children with your concerns about yourself and ask them for help, it will do wonders for your mental health as well as improve relations with your family. If at anytime 'taking care of the kids' becomes too much stress, it's time to up their responsibilities. You can take the stress and pain you feel and turn it into enriching growth for your entire family by acting as a team.