Hola, ladies and gentlemen!

And welcome to my little writing experiment.


I’m Mariana Calleja and I’m the writer in this place. (Not the cave, silly. This website!)

mariana calleja

I’m also a doctor in this other place. Creating healthy habits that stick, whether you’re at home, at work or on the road.mariana calleja MD

I come from a tiny, warm, happy country (like me!) in Central America: Costa Rica.

Mariana Calleja Costa Rica

In January 2010 I moved to Barcelona…

Mariana Calleja Barcelona

…until September 2015, when I decided to go for a long long trip.

Long term travel

I’ve been building a little online empire in the meantime – mwahaha!  The Good Habits Doctor’s in the house. Come on in. :)

mariana calleja MD

The future is looking exciting after I took this leap. (OMG, seriously, this leap! – September 2015 | Costa Brava, Spain)

Mariana Calleja Skydive

I plan to write exhaustingly as I develop my current book ideas, alongside with my online medical business.

I’m thrilled! I’ve decided to start small and focused. Here it is, my first healthy baby – already on sale.

Travel Vaccination Guide

And after all these years (thanks for reading me all along, it means everything!), I’ve decided to give this travel blog a little twist…

…more about the brainy stuff I’ve learned on the road, but also about life, you know: emotions, relationships, humankind, interactions, ugh, all of that fascinating stuff, yes. I simply love it. And I’m convinced it’s truly important. Even more as I see so many diverse cultures worldwide teaching me how we’re all the same deep down!

I want to talk more about what really matters, which to me is this: what people fear to talk. No matter our culture, location or traditions.

smart health good habits mariana


By combining my travel, writing, and medical geekiness, I aim to come up with some amazing and practical things that will be of good use to the world. For a better, healthier, lighter life, in body and mind.


I’d be thrilled if you jump on board. Life is messy and the brain is too! So there’s no time to loose as we explore. Let’s go!

life is messy

If you need to find me elsewhere, worry no more! I’m on Facebook of course, but also on Twitter and Instagram.

If you want to follow the good habits doctor…well, you got it too! Also on Facebook, Twitter and Instagram.


Okay, your turn!

I’d love to hear from you. Drop me a line anytime. ;)