Sometimes riding in a taxi can be a meditational journey. Staring out the window in a cab with a seated monk statue leading the way, it's the perfect time to clear out a cluttered brain. If the driver doesn't feel like chatting and if the radio isn't blaring, it's an ideal moment to take a deep breath and focus on a single positive thought. By the end of the ride you feel refreshed and ready to take on the outside world.
Of course, you don't need to be in a Bangkok cab staring at a Buddhist monk statue to meditate - you can do it anywhere. I have to admit, however, being in Thailand helps to set the mood.