I have left UPS, I have not looked back, I have been much happier and life is good.
here is a thread I made
http://www.browncafe.com/community/threads/the-grass-is-greener.62378/
If you are thinking about leaving DO IT.
I hope to find time to read your thread soon.
I left after 16 years, I was a clerk, a PT Supv. for various departments, and in TSG (for most of the time).
Somewhere along the way I lost sight of my goals and aspirations. In TSG, life is easier than most other jobs at UPS. Still, TSG was a frustrating place.
UPS does not often allow someone to ascend to their potential. You are often stuck doing something beneath your ability. I suppose this is true most everywhere to a degree.
My problem was that I was more passionate about my job-type than the service offered by the company -- i.e., I liked computers more than brown boxes. For some reason, I fought against seeing that UPS will also be about what made it big and famous. This is not UPS' fault. I should have left years before, but the benefits were velvet handcuffs. I also now realize that I made excuses to avoid change. Since UPS went public, everyone had to endure big changes at UPS. I hate to say it, but I didn't leave UPS on my own terms. I didn't get fired or anything like that. I left voluntarily with a buyout during the Force Reduction for TSG. However, like I said, I didn't leave because I was ready, I left because the changes were so many and so bad that it forced me to do what I hadn't (and possibly couldn't) do on my own. I left because I couldn't endure the bull any longer.
Ok... so I reacted rather than acted. I am still glad I reacted. Life is truly greener on the other side.
My only regret is that I couldn't see the dead-end until I crashed. A crash that left me for years as a damaged and rusty employee. I finally turned around and left the same way I came in -- as a volunteer. I steered my way out of UPS and I have been cruising along singing a happy tune ever since.
Just the other day, at my new company, I was asked what I miss most about UPS. Apparently I hesitated a long time because my manager commented that I must miss something. I hesitated again, and then gave the only real answer I had -- some of the people and friendships I left behind.