Recently I reacquainted myself with a common formula used among trainers. It is the 70-20-10 model for learning and development. The model is based on research back in the 1980s on what were the most significant learning experiences for effective leaders.1https://trainingindustry.com/wiki/content-development/the-702010-model-for-learning-and-development/.
The research showed that leaders learned most (70%) through hands-on-experience at work when they accepted challenging assignments and worked on problem-solving. This included learning from taking risks, experimenting and making mistakes.
The next greatest source of learning (20%) came from working with others. This would include collaborating with others, giving and receiving feedback and receiving coaching and mentoring. The last 10% was learning through educational courses, seminars and books.