In addition she had very friendly smile and cheerful glance, and seemed just absolutely happy person.
Then during the lecture the whole audience was surprised because the lecturer mentioned that she has been through the liver transplantation because of the cancer. And she had a chemotherapy but nothing helped, so the doctor said that only transplantation might extend her life by 5 years. Then it was a big issue to find a family who would be agree to give the organ of their dead relative. But she was lucky and at the last moment someone called.
So it's been more than 5 years and she's still alive, well educated, professionally successful, good looking.
And that was the moment I asked myself: "What actually makes me unhappy?" I mean what could make you unhappy if you are young and healthy, you have family and friends, everything is going well in your life. And sometimes you feel upset or frustrated for no reason really, some little troubles which happened in the morning can make you feel that way for the rest of the day.
The moral of the lecture: value your business and start value your life, make right priorities, don't let the minor issues change your emotional balance.

