Student or Learner
It is hard to know what is good or bad these days when it comes to what qualities you possess. What strong quality applies to you may be what will drag you to become successful. And whatever the world has to think or say about those qualities shouldn't bother you. Actually,
these qualities are what bring out the shine in you.
What does "strong quality" mean in this context? Does it equal the underlined "those qualities" and "these qualities"?
Please cite the source and author.