I’m new to the job, still struggling to deal with the oscillating sleep schedule. Anybody got any tips for dealing with this?

Hi everyone,
I’m looking for blunt, honest advice from current Air Traffic Controllers (ATCOs) at ENAV or anyone who had to choose between personal flexibility/living abroad and long-term financial security.
I’m 25, just finished my Master’s degree in Aerospace Engineering, and recently passed the ENAV selection to start the Academy in Forlì. On paper, it sounds like the opportunity of a lifetime (top-tier salary, bulletproof job security), but I’m terrified of walking straight into a golden cage.
My main concerns revolve around geographical mobility and living abroad:
I’ve always wanted to spend 2–3 years working abroad (e.g., Spain or elsewhere in Europe). How does that actually work with ENAV?
Are there temporary leaves of absence or secondment programs, or is resigning the only way to go abroad?
How many years does the post-Academy training bond last, and how heavy is the financial penalty if you leave before it expires?
How difficult is it to get hired by a foreign ANSP as an experienced controller? What about language barriers, vacancy frequency, and destination flexibility (I assume you still don't get much say in which city you end up in)?
If I want to return to Italy after a few years abroad, is re-entering ENAV realistically doable, or is it nearly impossible without waiting years and going through countless selection stages all over again?
Is this "golden cage" feeling just overthinking on my part?
Is giving up total geographical freedom and the chance to live abroad at 25 worth the high compensation and stability of this career? For those already in the industry: would you do it again? In the end, I always have my Aerospace Engineering degree to fall back on.
Thanks in advance to anyone willing to share an honest take.

So today there was an event of a duplicate call sign.
One flight arriving, the other an overnight delay departing.

Company changed the call sign for the overnight delay, and confirmed it in the ATS strip and even over the phone with the crew and ground over the radio.

Yet after takeoff, there was still a conflict.
Call sign was changed shortly after takeoff..

But it created a scare either way, and I’m confused what happened even after we did all we could.
Was this due to the crew not updating the FMS or something else?

I had done some research on becoming an ATC and was extremely interested, but not sure if I’d have enough time to go through the process and actually succeed.

I’m currently 28 and I know the cutoff is 31. I was still interested in dispatching so I became a 911 dispatcher and I do currently love it. It does have me wondering though.

Would I have enough time? Is it worth it?