Read widely across different subjects
Practice active recall
Use spaced repetition
Ask better questions
Solve challenging problems regularly
Learn logic and critical thinking
Write to clarify your thoughts
Teach what you learn to others
Stay curious
Seek feedback and correct mistakes
Limit distractions
Sleep enough
Exercise regularly
Eat a healthy diet
Meditate or practice mindfulness
Spend time with intelligent, thoughtful people
Reflect on your decisions and outcomes
Learn from books, courses, and mentors
Build deep focus habits
Challenge your assumptions
Keep learning consistently