Some weeks ago I left a job I loved and knew very well because it couldn't give me any future, low pay, short-term contracts etc. I was definitely burned out and.. found this new job which seems pretty cool and I finally have office hours and everything I wanted. I worked hard to switch jobs. I was also lucky as my country is deeply affected by the crisis (50% of people in their twenties and thirties are unemployed here).
It's finally my first office job. I am learning and there are still a lot of things to be learned. While my depression is getting better because I feel more like I have a future, on the other hand I'm extremely worried and tense. Really too much. I am ridiculously anxious about the job and have always hated these kind of changes.
I feel fine at the workplace - except when I do something wrong, but in the evening I start being anxious thinking about the next day and I don't sleep well at night. I feel I'm really too anxious about it. Everyone says "take your time" but I'm sort of stuck and terrified of not passing the trial period or not doing well enough. I also feel some pressure as I was hired with a very good contract in comparison to my other colleagues because of my studies, but at the moment I'm actually the one who has to learn everything..

Anyone been there, any suggestion to help feel slightly better? How can I make it through these months with a bit less anxiety?
Thanks in advance.