First of all, as long as you choose to be an electrician, you should do it seriously, and be careful and careless about everything in electricity. Safety is very important, especially when working live, you must pay attention to protect yourself. For example, wear insulated shoes, gloves and so on. Be careful not to touch the wall, ground and other places that can be directly connected to the earth when the wiring is live. Be calm when dealing with things, especially when encountering emergencies, and don't panic. As long as you use what you have learned, you can certainly solve it. Always keep a clear head and don't drink during work. Spend more time analyzing and understanding unfamiliar circuits. Theoretical study is the premise of practical operation. I hope you can study the theory seriously. At work, be modest and ask if you don't understand. If you work in a factory, you must learn mechanical knowledge from a mechanic. If you don't know mechanical knowledge at all, you will suffer a lot in troubleshooting in the future. For wiring, you should think about it. There are many ways of wiring. Do it yourself in your spare time and draw a wiring diagram to see which connection is the most practical, the most material-saving and the best and most reasonable. The above is my experience, and there may be other places I haven't mentioned. Because some things depend on yourself, sometimes you will know them naturally at work. Some things can only be understood but not expressed. I hope what I said is helpful to you.