Bitterness might caused us by or expressive of severe pain, grief, or regret.
But to be better on what we do means, How can you improve yourself when something bad happens?
How can may help this to produce a meaningful work?
How the bad things that come to our life can overcome by what we do so that it will valuable to other people?
How might help this to other people to relate their story on our story?
We get better, not in pain but to gain strength so that we keep going, practicing, and do it over and over again, regardless of what is happening.
I hope someday I inspire you, and together, we inspire other people.
Mark Tacastacas 
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