Through loyalty to the past, our mind refuses to realize that tomorrow's joy is possible only if today's makes way for it; that each wave owes the beauty of its line only to the withdrawal of the preceding one.
You're not there to spread any particular- if you're Bob Marley you're there to spread a message, but very few people can do that effectively without shoving opinions down someone's throat.
The talent that has to be learned is finding out what someone's passion is and setting them up to realize that. You don't get the best work from people if you're guiding them versus them guiding themselves.

