It is healthy when one gives his best irrespective of the effects. The results do not matter matter, there is no difference what happens, win or loss, 'good' or 'bad'. She does not have preferences. What counts is this one step while climbing, not reaching the summit!
On the other hand, it's unhealthy if my behaviour changes depending on the results. If I won, if it's sunny, if it's going OK, I'm happy. If I lost, if it's raining, if it's going 'bad', I'm unhappy. These are deep down not more than thoughts according to a certain pattern (conditioning). They may effect the whole system (the heart beat, etc.) through the M.E.T.A. process (mnemonic, eidetic, thymic, autonomic) But it doesn't change the fact that the root of the problem is thought.
If one is content for something, one is not truly content.
The epistemological definition of Unitary Perception is observation which includes the observer and the observed at the same time.
So there is nothing in the 'shadow'. There is no shadow. The shadow is a product of thought when one is not perceiving all what is happening right now.