Because No One can make you Happy but yourself.
And that applies to all areas of our life.
After trying hard and failing to please my mom, I finally decided today I want to live the rest of our time together a happy person.
So no matter her reaction to my many attempts to make her happy, I will still cherish the time we have left together, and put a smile on my face. And maybe she'll smile back.
That applies to quitting too: once I decided to be happy when the crave hit me because I knew it to be the proof I am still NOT smoking, the rest fell into place. It takes work, yes, it takes work to love yourself enough to be happy about a longing, about missing something. But we can do it, we can turn a frown into a smile, stand up and be proud of our work!