Cynthia Nixon is one classy lady.

On April 15, the “Sex and the City” star announced on “Good Morning America” that she is a breast cancer survivor.

“I didn’t really want to make it public while I was going through it,” she said on the TV show. “I didn’t want paparazzi at the hospital, that kind of thing.”

Not only is Nixon a brave and courageous woman, she shows the rest of the entertainment community that a celebrity is still human.

Had Lindsay Lohan been so mindful of her actions in the public eye, maybe rehab wouldn’t have been such a media fest. Usually, we hear a bit about so-and-so having issues staying away from the liquor cabinet, so they go off somewhere in the hills to pay millions of dollars for “privacy” before they return home to repeat the whole thing over again.

Alcoholism isn’t funny. I hesitate to think of “Li-Lo” in any shade of earnest light, but I imagine that publicity didn’t help ward off the liquor bottle when she returned home.

What Lindsay could learn from Cynthia: She’s not invincible. Without her health, vodka and Red Bulls are definitely out of the question.

Such maturity might have helped Paris Hilton, too. Just think: Had the court dates preceding her jail time been kept a tad quieter, maybe the heiress wouldn’t have felt so apt to rebel against the law. I mean if the courts aren’t out to get her, I don’t know who is. Seriously, is calling out for Mommy in the courtroom supposed to get her out of her sentence?

What Paris could learn from Cynthia: maturity. Mommy and Daddy can’t fix everything, even if they own the entire hotel industry. Be accountable for yourself, Paris.

And what’s a column about celebrity trainwrecks without Britney Spears? Spears, the queen of crashing and burning, should solicit Nixon’s advice for one-on-one help. Brit-Brit is notoriously known for her spiraling issues in mental health. Had the mother of two found a way to ward off paparazzi, maybe she wouldn’t be the world’s best-selling freak show.

Step aside Barnum & Bailey, and step right up to read about Britney. Who needs to look at car crashes when you’ve got free entertainment in the grocery store checkout lane?

What Britney could learn from Cynthia: just about everything. Britney is miles down her destructive path and seems to have soaked up all the paparazzi attention she can get. Whether or not there’s truly something mentally wrong with her, it’s evident she’s in need of a lifestyle

change. A good dose of initiative to secure her surroundings in privacy seems to be a good start to limiting her exposure and giving her some peace. She has enough money; it’s time to start taking care of herself.

Sometimes it takes a severe shake-up in one’s life to encourage better behavior. While Cynthia has always exhibited poise and professionalism in her public appearances, “normal” people who happen to be entertainers are few and far between.

It’s refreshing, and sadly, such an example may never come again.