Challenge Yourself to Go Deeper!
Do I know how the code really works?
Can the code I'm working on be written more simply? Where is the complexity?
Can I make better use of the libraries I am using?
Are the multiple places in the code where the same idioms are being repeated?
Are there edge cases that I might be missing?
Hit pause every so often.
Read books written by experts.
Read documentation and specs. Try and take your time understand them and then go to other sources to explain them.
Read code (ultimate source of truth).
// Ensure the global `wp` object exists.