Remembering

My brain works very oddly. Because when I'm in one mood, I tend to remember and forget things.
For example when everything is going well I tend to forget all the bad things that have happened and remember the good.
When things are lame I remember the bad and forget the good.

It's not like I really forget everything good, but I tend to view those smaller nice moments as less than they were.
And that's why I really should try to keep up with my blog and journal. So when I'm down I can remember the good, and when I'm up I remember that everything's not perfect.
I wonder if I'm the only one that thinks like this. . .