I've been thinking alot about my dosha this week as it has been a fairly hectic one. According to Ayurveda, each of us has a unique mix of three mind/body principles which creates our specific mental and physical characteristics. These three principles are called 'doshas'. Most of us have one or two doshas which are most lively in our nature, with the remaining one(s) less significant.
The three doshas in Ayurveda are Vata, Pitta, and Kapha. We each have all three of the doshas in our physiology, just in different proportions, so your dosha is unique and personal; it is like your fingerprint.
If you want to find out what your dosha is, the following site provides a quiz and an overview of the doshas.