Natural stress relievers are the best, try using DoTerra wild orange essential oil to help uplift your moods, and use lavender essential oil to help you relax and unwind. Both can be used aromatically, topically, in baths. This works wonders for me especially when I'm feeling frustrated. If you'd like more info I'd be more than happy to answer any questions
Do you get any time to take care of yourself? I find that eating healthy and exercise (and getting enough sleep) are key to keeping my stress levels low. I'm a full-time working mom of a 17-month-old, so it's not easy, but I make sure to make time for self-care. Are you able to do that?
I have four kids (and some dogs, and dh of course). Anyway, I have found that I need to take time (even if it's only a little), completely uninterupted and I need to be the one to decide when it ends (although, I have to make sure that it's not too long). I also have found that eating whole foods helps (fruits, veggies, nuts, meats; real food, the stuff that was made to go in our bodies, ya know?); also a little exercise. Also, a little dark chocolate goes a long way. It's also, partially, a decision; choosing not to get stressed about things, that's something I'm working on getting better at doing.
Right now, my "me" time and exercise are one and the same; I walk each day while my kids are eating lunch. I go outside; they know they cannot interupt me except for major emergencies (fire, 911, etc.).
Also, I noticed that I do better at not being so stressed when I'm getting enough sleep. I can tell you what I've learned about that, if you want. :-)
Take a walk outside for 15 minutes. It will change your state of mind. Little exercise, fresh air... Def. do soemthing to help you relax and handle your self better. No one likes tonhear they are nonfun to be around....