Your first name of Istas has given you energy, drive, and ambition, but also an almost excessively strong-willed and independent nature. This name gives the urge to leave home early in life. When you are annoyed, you must guard against a strong temper and the expression of intolerance and criticism. Therefore, if anyone interferes with your activities or offers unsolicited advice, you are inclined to react defensively and express your feelings in a blunt and, at times, caustic manner. Your love for others is shown more in your loyalty and sense of fair play rather than in any overt demonstrations of love and affection. Your great initiative and driving power could lead you into sales and promotional positions. You appreciate nature and the freedom associated with being in a natural environment. Over-intensity is your challenge; you put a great deal of effort into your activities, but often fail to take time to relax, to view your plans objectively, and perhaps, to consider the opinions of others. You become intensely involved with everything you plan to do, but the stress arising from frustrating obstacles or misunderstandings with others could prompt you to be intolerant and sarcastic in your expression, with breakdowns in congenial relations with family and friends a possible end result. Intensity affects the senses of your head as well, whereby you could suffer with migraine headaches, sinus problems, or throat and swallowing difficulties.