Whenever I experience this anxiety, I have learned that the cure is almost always better feedback. If I'm worried about the performance of my software, but I d

Whenever I experience this anxiety, I have learned that the cure is almost always better feedback. If I'm worried about the performance of my software, but I don't know which things to optimize, I need to use a profiler. If I'm worried that my code changes introduce bugs, I need tests. If I'm worried that a design isn't the best set of trade-offs, I need to share it with people whose judgement I trust and get their feedback. I'm not a manager, so I don't know exactly what feedback looks like at your level, but I'd suggest involving more of your team and collaborating on decisions more.