[drakonka]

I have felt this every single time I've switched jobs, and I've been at this for over a decade. It's normal to be scared, and to worry about doing a good job. It's normal to be slower when you ramp up at a brand new company. It sounds like you are introspective and proactive in analyzing your own progress and improving, which is a great sign. For me, there was no "overcoming" of this feeling. It abates over time and eventually you relax into the role as you get a handle on things.

In practice, for me those first months of stress always result in a lot of reading/brushing up quickly on new tech, a lot of digging around the code, debugging, late nights to finish tasks I feel I'm behind on, asking teammates about tools and processes, etc. But while all of that might help, in the end it's usually just a matter of waiting it out and knowing that this is a mental pattern I've dealt with before. Meditation sometimes helps.

Good luck! I really think you'll be just fine.