just read something that made me think..

"I went through a phase where I thought nostalgia was a bad thing.
- Dario Argento.

...That's because in most cases, it is.
Sure I'm guilty of looking back every now and again but the worst thing you can do is to dwell over it.
Since the term nostalgia itself means to want to go back to the past and often in a totally idealized form, you forget about all the bad things, clouding your judgement on something you shouldn't even give the time of day to be thinking about."