Inconsistency

Some days I'm down, I just sit about and mope,
Other days I'm on top of it, I feel like the Pope.
Some days I feel like I'm sliding down a slope,
Other days I'm happy, I'm skipping with my rope.
Some days I'm stupid, I act like I'm a dope,
Other days I feel fine and I'm sure that I can cope.
Some days I'm negative, through the dark I grope,
Other days my heart's strong and stable, I'm bursting with hope.