I agree that attitude certainly helps, I just think it is naive to believe it alone will always be sufficient, and hubris to suggest it can work for everyone.
Having said that - I'm glad it's working for you as well.
I registered an account just so I could reply and confirm your statement. While there are studies to suggest that 'Mindfulness' type approaches like the OP describes helps, there is nothing to suggest it lasts.
Unfortunately it's not a sine wave, it's more like a downhill slope. As you age, it only gets worse. I hate to appear like a dark cloud over the OP's sunny article, but I'm 27 years in. For the first 10 years or so, I too believed it made me stronger, tougher etc. Now I'm just happy to make it stop - whatever it takes.
Having said that - I'm glad it's working for you as well.