Are you a "Yes Man?"

One of my New Year's resolutions was to try and stop saying "yes" to everyone.  By being nice, and saying yes in the past, I've become over-committed, over-extended, and out more evening than in.  I'm on more committees, chairing more events and involved in more people's causes than I care to mention- or honestly even care about.  I've walked more miles and raised more pledges- and don't get me wrong- these are all good charities- I just need to learn to be more selective.
But it's not easy to say no.
When I first moved out of the city, I wanted to get involved so I could meet other women.  I chose groups and issues that I was genuinely interested and intrigued with- now it has snowballed.  It's like when you have a loose thread in your sweater, you know you shouldn't pull on it, but you just can't help it.  So you pull, just a little at first- but eventually, it unwearable.
That's how I feel.  Somewhat unwearable.  Out five nights a week, discussing various logistics or budgets.  
No more.  I have to choose me over them.  My family and the three that I feel are the most meaningful, and just say no to the rest.
Right?

"A 'No' uttered from the deepest conviction is better than a 'Yes' merely uttered to please, or worse to avoid trouble."

Mahatma Gandhi