I have a confession. About two months ago, I went to a studio in North London, met a photographer, and took my top off for Cosmopolitan magazine. It was for the amazing charity CoppaFeel – a feature designed to encourage people to extend their boob vocabulary to something more than ‘big’ and ‘small’ and say #whatnormalfeelslike. There were 30 other pairs of boobs involved (so I was in good company) and it was anonymous. So why, you might ask, have I chosen today to tell you all about it? Well, one because it’s a great campaign that is close to my heart (if you know what normal is for you, you are more likely to pick up any changes to your breasts). Two, it hit the shelves yesterday. And, three, it is completely out of character and has already been the source of much amusement among those I have told.

Just knowing that pre-cancer Jackie was so not the kind of woman to ever taking part in a topless shoot makes me smile. This is coming from a person who thinks being in her pyjamas at 7pm on a Friday night is daring and wearing a tankini is out there! I have been known for my love of reading, my workaholic tendencies and my extreme love of Christmas time. But, I can safely say, I didn’t think I’d ever make a statement with anything north of my waistline (or south for that matter). Up until January, I was just another tired-looking commuter racing to work. Now, I am still a commuter, but one with a rather amusing secret (which I admit is no longer a secret to all regular readers here).

I did it not because I have been transformed into an exhibitionist, but because I really want to make a difference to the lives of men and women everywhere. The campaign is bold and will probably divide opinion. But, if a spread full of boobs isn’t going to get people peering down through their shirts (their own shirts mind), then nothing will. It is also tied to a wider campaign, which includes Rankin-shot pictures on billboards across the country (although not on main road positions for obvious reasons). If it even saves one life, it will have been a worthwhile venture.

As experiences go, it was pretty liberating. Before this year, I had never had a make-up artist work on my face, let alone add foundation and glitter to my breasts. I liked the idea of the anonymity, so imagine my amusement when I turned up to discover I knew the photographer (professional hazard). Thankfully, a friendly catch-up was the perfect way to distract myself from the reality of the situation (and at least I had a bathrobe on for most of it).

Smiling at the magazine feature yesterday, I started to think about the things I have achieved this year that I would have never even considered just a year ago. I am a changed woman (I am even finding it hard to wear my old work clothes at the moment) and, you know what, I am absolutely delighted.

Here are a few highlights. I, Jackie Scully, have:

1) Got my top off for a national magazine – and the play the boob equivalent of Where’s Wally with colleagues! If you are wondering, yes, you can guess. Just don’t expect me to publically confirm (it is obvious to me, but then I do look at them every day).

2) Openly discussed the words ‘boobs’ and ‘breasts’ in a client meeting: it is amazing what can seem commonplace after spending your life talking boobs at the hospital. Good news is, no one is talking to my chest. Amusingly, one friend did say: ‘wow, but you look like you still have breasts’. That would be the reconstruction then!

3) Travelled across London bald (and wore a wig): first time was a little nerve-wracking, but now I don’t even think about it. Trouble is, when your hair is growing back the ‘is it cancer, is it alopecia’ debate is over. The better I feel, the more pitying stares I get! I should also add the fact I stood on a cliff with no hair. That was cold and liberating, however, and not quite as brave as baring all to commuters.

4) Worn magic pants: I was nicknamed Bridget Jones at university by a few friends, but that had nothing to do with the quality (or size) of my knickers. Now, however, I have worn pants that come up to my waist and hold everything in (including my super-glued stomach). I must say, I won’t be channelling my inner Bridget again any time soon, but I know she would have approved of my post-surgery image.

5) Appeared in an exercise video: ok, so it wasn’t the most active of videos (designed to help people reduce the risk of lymphodema), but there were cameras and I was in exercise gear. It was produced for The Haven and it should be available soon. Watch this space.

6) Run a 10k: Dodgy hips and toxic drugs do not a runner make. But, I am delighted to have crossed the finish line of not just one, but two, 10k races. I am now back in training for the next one (which may just be a bit longer)!

7) Have a photo shoot – and appear in a magazine as me (plus The Guardian homepage): because of my career, publishing will always be part of my life. I just never thought I’d end up in front of the camera. I also never thought I’d ever by anything more than a byline in a feature. I feel very privileged that I have been able to share the positive side of treatment with so many readers.

8) Make a boob cake: as the creator of digger cakes and Thomas the Tank Engine cakes, you might think a boob cake would be a natural next step for me. I am not sure the WI group I made it for will ever get over the bright pink icing and the boobie references though!

9) Play the cancer card: admittedly it has only really worked on a courier and a restaurant (desperate as I was for their bread and butter pudding recipe). When it works, it really does work. But, my word of caution to others contemplating calling it in is, it isn’t always as powerful as you might think. Handle with care I say.

10) Become an official blogger and even received a tweet from a celebrity: while these things are unrelated (the tweet was for baking rather than blogging), I believe I have now truly embraced the digital age. I never thought I would have the confidence to write about my story (but I have, both here and for Breast Cancer Care). In fact, my blog has been read in 108 different countries. And, I never thought I’d have the confidence to bake a cake for a radio programme (but I did).

So what have I learned by undertaking all this abnormal activity? I have learned how to have fun, not take myself too seriously, be playful and be bold. When life is short, there are some things you just have to get on and try. I have also learned that life’s comfort zone is a bit too comfortable and, by being open and giving time for others, you can make the best of almost any experience.

Most importantly, however, I have learned that there are many ways to make a difference in this world. And making a difference is all I really want to do.

Watch this space and may you find your own novel ways to leave your mark!