What was Andrew Jackson's main weakness?

Andrew Jackson was from a very modest background. Some historians would say he was born on the wrong side of the tracks. This most likely gave Andrew Jackson a type of inferiority complex that resonated with many decisions that he made. By all accounts, Jackson had a very quick temper and was slow to forgive. This weakness had the effect of earning him a lot of powerful enemies in a job where your success depended on making friends.

Andrew Jackson was also know-it-all of sorts. He often made decisions unilaterally without consulting his advisors. Even when he did seek counsel, he often ignored the advice given. In general, he was very stubborn and had tunnel vision because of this negative character trait. Jackson's strong character and provocative ways encouraged the development of an opposition party, the Whigs.

A final weakness of Andrew Jackson is that he was violent and brutal in his treatment of Indians. He forcefully had them removed from their lands and supported excessive violence in this effort. Historians, in general, do not have a favorable opinion in Jackson's treatment of the Indians because of the atrocities Native Americans faced while Jackson was president.

What were Andrew Jackson's strengths?

Andrew Jackson was a forceful leader from the West, which back then meant Tennessee.  He had an impressive military record against the Creek Indians at Horseshoe Bend and the unnecessary yet popular Battle of New Orleans.  He had common man appeal--he had little formal education and purportedly slept on the ground with his troops as an officer during the War of 1812.  As president, he challenged the Eastern establishment and vetoed many bills, most famously the Bank Bill of 1832 which would have reauthorized the national bank.  He catered to his Western base by allowing the Trail of Tears to happen, thus sending native groups west and opening up a land rush in Georgia.  He also put an end to the Nullification Crisis by threatening to lead the army into South Carolina if that state seceded, thus avoiding a Civil War in America thirty years before it actually happened.  He was the head of the Democratic party and managed to get his Vice President Martin Van Buren elected after Jackson served two terms.  Politicians before the Civil War, both Democrat and Whig, copied elements of his political campaign by trying to appeal to the common man and making their candidate appear folksy.