The circle of life is a combination with multiple feelings of one person. Squall is someone that never expresses his feelings not even to himself, this makes clear that Squall does not know who he really is and can be.

Strenght

Squall is someone that relies on strenght and power, he also believes in it, that makes him closer to his real soul and can move swifty in battles and with using words. Withouth Strenght, Squall cannot rely on anything else, because he does not want to rely on many things, supposely help from others.

An other fact is that Squall does not like to take lead, he rather obbey's to someone above him, rather then people listening to him. This is not because he might give out a wrong order and lead them all to death, he does not like to be in the middle of the attention. But he does care for other people, how hard and many times he denies.

Angry

Angry is a more detailed structure in Squall's personality then happiness, but everytime he seems to be provoked, angry or dissapointed, Squall seems to lighten up his heart and expresses his current feelings on that niveau.

It scares people of from Squall more easily, yet many know and can live with how he can be or what he does and get's used to his affections.

Sadness

I believe in the 12 years people have known him, Squall has never been sad by any fact many people would cry for. He did cry when he was a child, mostly when Seifer was provoking him into a fight and Squall eagerly believed his sis would come and rescue him. In the next upcoming years, which sis never returned, Squall became very closed in his heart and finds no reason whatsoever to cry or to be sad.

If he might be dissapointed he starts to think in himself of what he has done wrong and how he can change it. He acts to mature for the person of age he really is. Ordinary people would hang around here and there, have fun, and fall in love, which Squall never did and has lost many good things in life. In other words he has grown to quickly for him to finally realize what the world has to offer.

Happiness

Squall is not the type of guy to hang around other people and make fun, I think he has never been fully happy in his life, and if he does he does not show it or say it.

There are quite a few situations in where Squall can be happy, everytime he wins a difficult battle in where he almost lost, his report card that say's he is finally a member of SeeD and of course the situation in where he saves his love.

To come back to the love thing, Squall has never had a proper date or girlfriend, I know there might have happend something in the past, but with Squall's personality I do not think he was gonna fall in love with someone that fast if they weren't meant to be.