Your first name of Mcmillan has given you energy, drive, and ambition, but also an almost excessively strong-willed and independent nature. Generally, you do not like to waste time on superficial conversation. You tend to express yourself in an opinionated, candid, and matter-of-fact manner. 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. You often feel you could have achieved even better results. 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. If, for some reason, you cannot carry out your plans, you can experience deep moods of depression. Intensity affects the senses of your head as well, whereby you could suffer with migraine headaches, sinus problems, or throat and swallowing difficulties. While you are creative, inventive, and ingenious in practical matters, and always ready to initiate and promote new undertakings, you often experience difficulty in bringing your undertakings to a successful conclusion because of your own changing interests or changing circumstances.