because if my mother says, one more time, 'nobody can make you feel unhappy, it's how you choose to react' I will make her feel very sad....
Honestly, people are quite capable of making me feel crap, and I don't see how grinning madly would make me feel better when a friend cancels/ whatever. The other one is how having a positive attitude beats cancer. Like my dad should have just smiled more during chemo (before he died at a young age). Feeling better now.