The largest issue yoga teachers in training will face after they are certified is discouragement. Probably more than 75% abandon their dreams of being full time yoga instructors. The Buddha taught that discouragement is merely another form of laziness. Those who give up on their desire do so because of inertia - "it's too hard to make money!" "I don't get enough people to yoga." "I have to teach too many classes to make money." etc, etc, etc.
Yet it is sheer perseverance which eventually wins the day. David Swenson is a world renown yogi. But here's how he describes where he was at one point in his yoga life:
In the early days, Swenson says, only hippies practiced yoga in the US. “We couldn’t make money doing yoga or teaching yoga. You teach yoga because you enjoy it, but you couldn’t make a living.”
He had done other jobs – from waiting on tables to landscaping to selling cars – but eventually returned to yoga in 1990. “I was struggling, I couldn’t pay my rent, it was a really difficult time. I had barely enough money for food,” Swenson recalls.
“Then I had an epiphany one day, that I should really be teaching yoga and I’m going to commit to do that. I remember I wrote down on a piece of paper: ‘I have no idea what the future holds, but I feel as though I am being drawn forward by an unseen force. I have no idea where this force will lead me, but I know now I am doing what I should be doing and so I surrender.’”
So along with perseverance maybe considering "surrender" to a higher power and trusting it along with yourself are the keys to experienced greater satisfaction and success teaching yoga.