stylistic:tone, structural:expansion
Law practice and marriage

In 1756, Adams began reading law under James Putnam, a leading lawyer in Worcester. In 1758, he earned an A.M. from Harvard, and in 1759 was admitted to the bar. He developed an early habit of diary writing; this included his impressions of James Otis Jr. 's 1761 challenge to the legality of British writs of assistance, which allowed British officials to search a home without notice or reason. Otis's argument against the writs inspired Adams to the cause of the American colonies.

In 1763, Adams explored aspects of political theory in seven essays written for Boston newspapers. Under the pen name "Humphrey Ploughjogger", he ridiculed the selfish thirst for power he perceived among the Massachusetts colonial elite. Adams was initially less well known than his older cousin Samuel Adams, but his influence emerged from his work as a constitutional lawyer, his analysis of history, and his dedication to republicanism. Adams often found his own irascible nature a constraint in his political career.

In the late 1750s, Adams fell in love with Hannah Quincy; he was poised to propose but was interrupted by friends, and the moment was lost. In 1759, he met 15-year-old Abigail Smith, his third cousin, through his friend Richard Cranch, who was courting Abigail's older sister. Adams initially was not impressed with Abigail and her two sisters, writing that they were not "fond, nor frank, nor candid".

In time, Adams grew close to Abigail. They were married on October 25, 1764, despite the opposition of Abigail's mother. The pair shared a love of books and proved honest in their praise and criticism of each other. After his father's death in 1761, Adams had inherited a 9 + 1 ⁄ 2 -acre (3.8 ha) farm and a house where they lived until 1783.

John and Abigail had six children: Abigail (known "Nabby") in 1765, John Quincy in 1767, Susanna in 1768, Charles in 1770, Thomas in 1772, and Elizabeth in 1777. Susanna died when she was one year old, while Elizabeth was stillborn. All three of Adams's sons became lawyers. Charles and Thomas were unsuccessful, became alcoholics, and died at a relatively young age. In contrast, John Quincy excelled and launched a political career, eventually becoming president himself.