The Siete Leyes (or Seven Laws) were a series of constitutional instruments that fundamentally altered the organizational structure of the young first Mexican republic. They were enacted under President Antonio López de Santa Anna on 15 December 1835 to centralize and strengthen the federal government at a time when the very independence of Mexico was in question.

Deepak Chopra (Hindi: दीपक चोपड़ा; born October 22, 1946) is an Indian-born, American physician, public speaker, and writer. He is generally specialized in subjects such as spirituality, Ayurveda and mind-body medicine. Chopra began his career as an endocrinologist and later shifted his focus to alternative medicine. He now runs his own medical center with a focus on mind-body connections.^{[clarification needed]} He is also a lecturer at the Update in Internal Medicine event.

Chopra was an assistant to Maharishi Mahesh Yogi before starting his own career in the late 1980s by publishing self-help books on New Age spirituality and alternative medicine. A friend of Michael Jackson for 20 years, Chopra criticized the "cult of drug-pushing doctors, with their co-dependent relationships with addicted celebrities", saying that he hoped Jackson's death, attributed to an overdose of a prescription drug, would be a call to action.

Chopra was born in New Delhi, India. His father, Krishan Chopra (1919–2001) was a prominent Indian cardiologist, and head of the department of medicine and cardiology at Mool Chand Khairati Ram Hospital, New Delhi, for over 25 years, He was also a lieutenant in the British army. His paternal grandfather was a sergeant in the British Army, who looked to Ayurveda for treatment for a heart condition when the condition did not improve with Western medicine.

Brian Tracy (born January 5, 1944 in Charlottetown, PEI, Canada) is a self-help author and motivational speaker. He serves as Chairman of Brian Tracy International, a human resource company based in Solana Beach, California, with affiliates throughout the United States and thirty-one other countries.

After dropping out of high school before graduation, Tracy got a job on a tramp steamer and traveled around the world for eight years, eventually visiting more than eighty countries on five continents.

When he could no longer find a job as a laborer, he went into sales. Struggling at first, he decided to ask other successful salesmen for advice, and then to emulate them. By the end of his first year, he attained the status of top salesman. After his second year, he was made a Vice President in charge of 95 people. At the time he was only 25 years old.

Beginning in 1981, Tracy assembled his "success system", which was initially called "The Phoenix Seminar." Three years later, in 1985, he released an updated version of this seminar as a self-help audio tape entitled "The Psychology of Achievement".