I know that feeling. I'm one of those developers that is slower than a lot, but I also know from long experience that when I deliver something, it's solid. It's not that I don't make mistakes, but that I work in a way that helps to minimize them when I do make them. It takes me longer to get things done than the hotshots, but there will usually be fewer problems and the problems that do exist will usually be much shallower. And unlike a lot of people my work contributes to a net decrease of technical debt.
I'm not saying this to brag, but to emphasize that this is what it takes to do quality work.
I'm not saying this to brag, but to emphasize that this is what it takes to do quality work.