I don't know. But I'll answer anyway.
- Enthusiasm for the subject
- Comfort with the level of knowledge and understanding of the material
- Some minimal level of organization ability
- Pacing
- Some patience, but not too much
- Some ineffable ability to explain stuff
- Did I mention patience, lots of patience
- Time. Practise. Time.
More like this
Patience is power; with time and patience the mulberry leaf becomes a silk gown.
- Chinese proverb
patience (definition no. 1): the quality of being patient, as the bearing of provocation, annoyance, misfortune, or pain, without complaint, loss of temper, irritation, or the like.
Some are just born with it.
Patience and duck-tape
All human power is a compound of time and patience.
- Honore de Balzac