I've always had a streak of being high-strung. It's not something I'm particularly proud of, especially when so many times it makes me come off as a huge jerk. It was particularly a problem when I was younger and when I had to deal with large amounts of stress.
Recently, I reminisced on the past and realized that after my son was born four years ago, I've really lightened up. Things that would irritate me don't seem to phase me anymore. I used to be a clean freak, things had to be done a certain way, altering a plan would infuriate me even if it was the right thing to do. Now, when someone spills a cup of milk and it runs down the sides of the table onto the floor and into the rug, I simply shrug internally, grab a towel and clean it up as quickly as I can. I don't get mad, I don't feel anger. It is what it is. I feel at ease and so much more relaxed. The really terrible thing about all those years of being so stiff was I was robbing myself of having a good time and just letting things happen.
Being a father changed me and all for the better and definitely the second smartest thing I've ever done. I can even make better use of the limited time I have at my disposal for work or relaxation. Situations that would even stress out other people don't nearly effect me as much. I'm not sure how I've managed to achieve this and it wasn't through any method like meditation, rather, one day a switch inside me flipped and I'm able to more fully control how I feel unconsciously.
Most things in life aren't worth getting upset about. Take a step back, let things play out a bit before choosing to actively involve yourself. Being strategic rather than emotional can go a long way in not only managing your own level of stress, but also any difficult situation you discover.
Just let go.