@rothko There are two meanings indeed. The one your therapist probably talked about is more about protecting yourself from being hit hard by external forces/influences.

The other one often used in management and every day discourse is about fighting through/enduring the hardships.

So while the first version allows you to decline things you're actually don't want to do or can't do without hurting yourself, the second one frames enduring bad things at all times as a matter of honor, no matter what is the cost.