Instead of thinking you have the answers to everything, the best way to approach your future career path is to accept that you can’t be a Know-It-All. Instead, you can dig deep into a specific area and be the expert in that field without losing your curiosity and willingness to try to grasp the whole picture (or at least fragments).
Your ability to stay curious will make you a great developer since it’ll make you stay relevant amongst other (and newer) developers. If you keep focusing on learning and improving your skills, you’ll most likely remain motivated and won’t miss out on new learning opportunities that you would have otherwise.
Keep asking “stupid” questions
Since you’re operating in a constantly changing field, you might as well accept that you don’t know everything and probably never will. The good news is that you’re not alone and that it’s not a burden but a gift. Keep looking for things you don’t understand and see them as opportunities to learn something new.
In addition, don’t be afraid to look stupid if someone mentions a technology you haven’t heard of before. Ask all the questions you can think of about it (if the occasion allows it - otherwise, take notes and look it up later), and you've learned something new in a couple of minutes. Asking those “stupid” questions shows that you’re paying attention. It gives you a broader understanding, making it easier to contribute faster.
It takes experience to create beautiful code
The fact that you’ve explored a lot doesn’t mean that people following in your footsteps have. That’s why “beautiful code” is so important. A code being beautiful doesn’t mean that it has the looks. Instead, it’s intended to be used and consumed by the person working with it (and you can’t assume they are developers). Therefore, it has to be easy to read, understand and interpret, meaning it shouldn’t be too complex or too long. Here, as a senior developer, you’re responsible for simplifying something complex - making it as clean as possible. A task you wouldn’t be able to do if you hadn’t had a few years of experience, practice, and exposure to similar challenges.
Read more: Why we need diversity to end bad tech!