TWO WEEKS NOTICE

I'm trying to write this resignation letter and for once, I don't know what to say or write. How do you tell people who you've worked for for the last 5 years that you're done with them? Do you say that it's just time to move on? See what other opportunities are out there? I feel like I'm breaking up with someone! Hahaha...

I know I've complained a lot about working where I work now; the rude customers, the inundation of orders on me, the mundaneness of it all, etc. But it's been such a safe place for me to be. I know that safe isn't always good, but for the past 5 years it's been enough. Though I'll miss my boss and co-workers, I'm thankful that I realize that this isn't enough. I want so much more...