How much effort is enough? In the law, often the answer is, it’s never enough.
That’s a burnout-answer.But it doesn’t mean we don’t have to work our tails off to do a good job.
 
Mindfulness invites us to work hard, too, but there is an “enough.”
Sometimes “enough” is a few minutes of practice. Sometimes, it’s a ten-day silent retreat. Always, it’s practicing a least a little, every day. 

In the immortal words of Justice Stewart, we know it when we see it.
Louis Armstrong famously said,

“If I don't practice for a day, I know it. If I don't practice for two days, the critics know it. If I don't practice for three days, the public knows it.”  I’m thinking Mr. Armstrong and Mr. Stewartboth knew what they were talking about.