It helps writing it down on a piece of paper, and doing these problems with a pencil and good eraser. I like to make a grid at the bottom of my paper listing all the elements on the left side and the right side to see which part of the equation I need to balance.
22 Na2S2O3 + 10 KBrO3 + 7 H2SO4 = 8 Na2S4O6 + 5 K2SO4 + 14 Na2HSO4 + 5 Br2