But none can say it with the same conviction as Kathy Mytton who has just lost 85lb.
Kathy is a new person in the true sense. Because she used to be a burly rugby player called Peter and fathered three children by two ex-wives.
But now the 55-year-old artist, who lives in Cragg Vale, is starting the New Year on a high because she's well on her way to having the body she always dreamed of.
Kathy, who was born in Worcestershire but moved to Calderdale 27 years ago, claims she knew from the age of four that she was trapped in the wrong body but only worked up the courage to do something about it five years ago.
She "came out" to her friends and, 18 months ago, changed her name by deed poll and started dressing as a woman full-time.
Now she attends a clinic in Leeds and has started hormone treatment to become a woman. She hopes to have sex reassignment surgery, paid for by the local health authority, soon.
Men who are in the process of changing their gender to female are known as male to female or MTF. It is major surgery and not without risks.
Kathy, who is 6ft and has size nine feet, who was a prop forward at school. She says turning 50 was a major milestone and made her realise that she could no longer go on living a lie.
"I've had a good life and done lots of things, but it would be fair to say I've had to compromise for most of it.
"I decided when I hit 50 that life was too short and it was time I was true to myself. It was the best decision I have ever made and I wish I'd done it years ago," says Kathy, who studied fine art at university and is now setting up her own internet-based art business.
She claims she was gobsmacked at how easily local people accepted her new identity. "I'm amazed at how kind and generous those around me have been. They made it so easy for me and I can't thank them enough,"
It's because of them she is so open and can laugh about herself.
"I used to wear my mum's clothes as a child but couldn't talk to anyone about it because in those days it was really frowned upon. I hated being a bloke, it's so boring. It's true when they say girls have all the fun."
Kathy, who has been single for eight years and lives with her dog, Brock, has always struggled with her weight. It only came home to her how big she was when she started shopping for women's clothes.
The turning point came last September when a friend dragged her along to WeightWatchers.
She attends Denise Western's Tuesday evening class at Central Street School, Hebden Bridge, and is the life and soul of the group. Denise says: "Everyone loves Kathy in class because of her bubbly personality and the fact she always has plenty to say. She's an inspiration because of her weight loss, and is always ready to help and advise other members."
Kathy says losing weight hasn't just made her fitter, it's also boosted her confidence and she now loves shopping trips. "I adore clothes. They are just as important to me as healthy eating. I've gone from a size 22 to a size 14 and can't believed the choice now. It's incredible."
She drinks wine when she goes out and tries to keep off fast food and takeaways. She also does lots of walking with Brock and says a big incentive to keeping off the fatty foods is her surgery. Doctors have warned her it could be held up if she was overweight.
"I'll never go back to being big again because I look so much more feminine slim," says Kathy. Her favourite colour is pink and she loves everything girlie – especially high heels. "I don't like my size nine feet but I like wearing heels even if they are hard to walk in."
And what's the one thing she is looking forward to after surgery? Having boobs of course. Then she really will be a new woman...