When I was in my late twenties，I was diagnosed with stomach cancer.Doctors operated and told me to hope for the best.I returned to Japan，where I was working，and tried to forget about it.The tumors（肿瘤）returned a year later，this time in my 1 .After a long search，the surgeons found a new2 to remove them，but I knew this was，again，perhaps only a（n）3 fix.I was a mess for the next six months.
Then I met a man who changed my 4 .Dr.Derek Roger had spent 30 years researching why some people in difficult situations become depressed，while others 5 .He taught me everything he'd learned，and as I started applying it，my 6 quieted down，even though my situation didn't change.In fact，the cancer came back about five years ago and remains relatively 7 in my liver.But I no longer worry about it.
The process starts with understanding that stress is caused not by other people or 8 events，but by your reactions to them.Pressure is not stress.But the former is transformed into the latter when you add one factor：constant worrying，a（n）9 to keep rethinking past or future events，while 10 negative emotion to those thoughts.Constant worrying is ongoing and 11 ， damaging your health，productivity，and well-being.Being 12 in the past or the future also takes us away from the present，making us unable to complete the work 13 on our plates.
While struggling with cancer，it took me a couple of years to train myself.But ultimately it worked.My stress levels went down，my health improved，and my career14 .More heartening，I discovered that everything Derek had taught me could be taught to others，with 15 results.
