First humans must learn how emotions function. It is the precursor to everything in our life.
Every moment has emotions involved so it is learnt from birth on, but the real education should start with 12 years.
Next people must learn about learning and sharing knowledge. We should keep learning all our lives and we must challenge our knowledge all the time. So that's why learning how to learn fast ist vital. With 13 this step starts.
Then, we focus on our imagination, a person can become everything by sheer focus on that idea. It must be learned and honed. From 14 years onwards this is part of education.
Controlling thoughts, silencing them, using them for your goals is a feature that any character must be able to wield from 15 years onwards.
Thoughts create our roots, so from 16 on wards a person can use calm emotions, knowledge, imagination and thoughts to create his own roots.
Based on the chosen roots we reproduce, we build the fitting habits to materialize the idea, from 17 onwards a person should be able to create the suitable roots.
The final step is keeping the material intact be restarting the creation circle, with 18 the education of how to build a character is completed.