This idea is a major component in stoic philosophy, and it's something I learned from growing up with my dad. He frequently would sleep on the floor with only a

This idea is a major component in stoic philosophy, and it's something I learned from growing up with my dad. He frequently would sleep on the floor with only a blanket, or even sleep outside in the yard sometimes. He would not wear a coat to work one day in the winter. I was working with him in the mountains of Colorado one winter, and about 15 minutes before we got to work (we had about an hour commute to get to the job site in the mountains), he would roll the windows all the way down. He said, "It makes it much easier to get out of the truck when you get to work." When he got out to fuel up his truck, he would not wear a coat, nor would he get back in the truck while it was fueling. He had a truck that had a removable top for awhile. He took the top off and left it that way for a whole year. He parked it under an awning at night, so the snow wouldn't be covering his seats, but otherwise he was open to the weather, whatever it brought. He always took cold showers, and we always parked at the end of the parking lot farthest away from the doors, because "You can always find a parking spot there, and you always remember where you parked." I could go on with a lot more examples from his (and my) life, but the important insight that I gained from this kind of effort was that by choosing to add discomfort to your life, and learning to be at ease while being uncomfortable, makes it much easier to stay level-headed and relaxed when things happen in your life that are uncomfortable that you didn't choose. You become much more capable of absorbing adversity when you practice absorbing adversity.