“Not being good enough” is an illusion.
Most people never pick up a book. Most people never try to take a course. Most people stop learning after they leave school. Most people find the first job they can, work at it until the job stops existing, and repeat that dance for the rest of their lives.
If you’re here, if you’re trying to read, to learn, to exercise your mind…
You’re already “good enough”, you already did more than most.
You’re already ahead.