What point in the game are you, and how are your levels?
Here's some advice to those going by the stradegy guide and not taking time to level up.
Before you do anything, I'd level up Squall and whomever was in my party to a high level. Every thing goes by quicker when you fight it, and you won't have to worry about leveling up late in the game. I just went by the stradegy guide on my 5th time playing the game, to make sure I got every thing and didn't miss a thing. Later in the game, I hadn't taken any time to level up just by training. I needed to level up when I was fighting Adel, and nothing seemed to work. In areas around bosses, monsters give you low EXP. At Lunatic Pandora, when you're supposed to go fight Adel, the monsters give you around 1. So, level up before you do anything! Even before you go on the SeeD mission.