The correct answer to this open question is the following.
One specific example of President Jackson strengthening the executive branch in relation to Congress or the Supreme Court was the moment when he fired the entire cabinet in 1831, to establish his power and defend his loyal friend John Eaton, the Secretary of War. Jackson believed that a strong presidency could better serve the people. That is why he was considered the representative of the people, not only the administrator of the executive branch. These decisions created problems with the other branches of the federal government, mainly with the legislative branch.