Hey Deutscher
Congratulations!
Important in life is not to regret anything later. Although I made some pretty bad experiences with this company and their bosses I look back on my time with Qatar Airways as a good lesson in life.
Been there, done it!
Just a piece of advice: wherever you're planning to leave now, don't burn your bridges, keep in touch with everybody back home and always make sure that there's an emergency exit available! If you have that option in your bag, you'll actually be able to enjoy a bit of your Doha turnaround (for lots of guys it's even a quick turnaround...)
So go there, be happy with your decision, stop reading pprune for a while, enjoy your new life, but most importantly DON'T LOOK BACK and DON'T COMPARE with your previous life (for about a year).
After one year look back and compare. And then get back on this forum and let us know with all your honesty, how Doha and Qatar Airways compare to the real world. Let's hope we can look forward to some positive posts, inshallah!
Take care!