system
Given the following post, respond as if you're commenting on Reddit:
human
How hard was your first programming job ?

I got my first job this week and I have some real issues to work on my project.

It's an internal software that's in a continuous development for like 10 years, it's a realy big C# project which interact with a huge database. 

I have to implement new features and I'm struggling to do my job. Hard to understand how the software works, hard to understand this awful DBs structure. 
I feel like a total incompetent. 

In college I wasn't the best student, but I was able to understand and finish any project in time. Here I feel like I'being a burden for my team.
gpt
Frankly you will **temporarily** be a burden for the team.

That's just how it is in the industry, when people join new projects and need to learn the codebase.

Even very experienced programmers will experience this, though they tend to get up-to-speed faster.