Happy New Year, my friend!

Good to ear from you that all the difficulties that you have passed trough in 2023 will be a good package to survive and grow in 2024!

Go to the gym x3 times a week. Losing 10-20 kg would be the goal but I understand that it would be the logical consequence of doing the first thing well.
I will also have to watch how I eat since I tend to eat poorly if I don't organize myself.

IMHO as you start to eat "better" in time, and to sleep better, the gym only would be a supporter... The best practice for having a stable weight is nutrition and sleep. Trust me on this, my friend :)

Good luck for your journey, my friend!