Cheerfulness

Gloominess is an ally of the enemy

A certain form of gloominess or sadness can be a form of spirituality some practice

 - sad for the situations 

- sad for sins

But it shouldn't be gloominess but atonement 

Yes, reaction is naturally sadness. But we need to also atone for it, not merely indulge in sadness.

Our happiness shouldn't be that of a well-fed dog. It should be more supernatural. It may happen that sometimes, we may be carefree. But we shouldn't strive for that.  

Our Father says our happiness is in the a l shape of the Cross. 

Sufferings are bound to happen. There is always something that doesn't go as we should

We can always smile.