It takes approximately 21 days to develop a new habit When I was young, I took swimming lessons. After the instructor said to jump into the pool like any kid, I ran and jumped into the deep end of the pool. For someone who couldn't swimg, that wasn't the smartest thing. I had to be rescued. From then on, if I went into the water, I would go into a panic if I couldn't touch the bottom In January of 2012, I signed up for a triathlon. I had never done anything close to this, not even a 5k run. In fact, it had been 25 years since I did any type of strenuous exercise. I wasn't sure how to train,...