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I think that we should not think like that 'grow to be able to help others'.
Each grow to be able to be happy themselves, it is enough, I think.

Everyone tries to be happy, not try to help others, then everyone will become happy.

Surely I don't oppose others to help the others.

Yes, but not all of us can make ourselves happy

Happiness lies in contentment.

Old saying, but still valid, I think.

In my words,
Happiness is not to pursue, but to feel.