I've found recently that I've been less stressed and more content. I first noticed it the other day when someone flipped me off while driving. Normally, I would have gotten angry and/or defensive, wondering what I had done to deserve such a thing. Instead, my thought was, "Oh well".
Learning to say "Oh well" is the best thing I could have done for my sanity, my health, and my overall spiritual well being.
Brooklyn squishes her Cheerios into the carpet right after I vacuumed? Oh well. It was going to get dirty sooner or later. Xbox Live not working so I can't watch Netflix? Oh well. I can read. Or get on the computer. Or watch a DVD. Brandon doesn't get home til 7 at the earliest because of baseball practice and games? Oh well. He has a job which pays enough for me to not have to work out of the home, which I should be thankful for.
I just decided that I was going to stop letting things get to me. Maybe I stopped fighting against God for once. He does ask us to just bring everything to Him and let Him take care of it. So I finally did. It's amazing how I thought it was so hard my entire life and all of a sudden I decided to just give it up. And how much easier life has become.
Try it. The next time something happens that you can't prevent, can't change, and can't do anything to fix, just say "Oh well", and move on with your life. You'll smile more :)