Thai cuisine usually consists of lightly prepared dishes with strong aromatic components and balance of flavor and texture are super important. When you think about flavor balance, think of the 4 S's: Salty, Sweet, Sour, Spicy. When you're cooking you should be tasting as you go, so if something tastes a little too salty, try adding a little more sugar to the dish. If it tastes a little too sour add a little salt and if it's too spicy a little sugar should do the trick. You get this picture.