What are relaxing colors to paint my living room and kitchen?
Right now my kitchen is orange and my living room is yellow. I read that yellow walls cause anxiety. Any ideas?

I've had yellow kitchens and yellow living rooms, and I can honestly say that having yellow walls did cause me to feel stressed. My floor was beige as well, and the colors just all worked together in a sort of dull swirl.
Relaxing colors for kitchens are taupe, mochas, and blues. Avoid brights like red and orange. Strong colors like that make one feel as though you are startled every time you walk in the room. I'd go with a dark mocha in your kitchen, something that makes you think of coffee.
Your living room should be a complementary color that is similar to the kitchen. The rooms in your home should always flow together. For a good idea of what colors work well, choose a palette sample from a paint store. If you choose one main color for your kitchen, you should be able to have three or four complementary colors that match on the palette. Choose one of these colors for your living room.
Tie everything together with an accessory that has strong colors, because with neutral walls you are free to go wild with color in other ways. With mochas and taupes, you can accessorize with orange, blue, red, and even yellow if you like it. Buy a big area rug for under your table such as this
Mystique multi area rug. Add some nice throw pillows to your couch, art work in your kitchen, or a cozy blanket for reading in strong, bright colors.
I think with neutrals, you'll find your house much more relaxing.