How do we decide what is right or wrong?

Q: How do we decide what is right or wrong?

Guruji: That which gives you long-term happiness and short-term problem, is right. That which gives short-term happiness and long-term misery,is wrong.
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"I admire those people who can stay calm despite of too much pain. But, I love those who cry for a while, but after the tears have fallen, you'll see a real fighter the moment they start to smile."
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"Be mindful of what you throw away, be careful of what you push away, and think hard before you walk away."

Om Namah Shivay