Our Karmas are responsible for our destiny...................

Krishna says in Bhagvad gita...

यदा सत्त्वे प्रवृद्धे तु प्रलयं याति देहभृत ।
तदोत्तमविदाम् लोकन मलानप्रतिपद्यते ॥  (BG 14.14)

When one dies in the mode of goodness, he attains to the pure higher planets of the great sages.

रजसि प्रलयं गत्वा कर्मसरिषु जायते ।
तथा प्रलीनस्तमसि मूढ़योनिषु जायते ॥  (BG 14.15)

When one dies in the mode of passion, he takes birth among those engaged in fruitive activities; and when one dies in the mode of ignorance, he takes birth in the animal kingdom.

 

कर्मणः सुकृतस्याहुः सात्त्विकं निर्मलं फलम । 

रजसस्तु फलम दुखंअज्ञानं तमसः फलम ॥ (BG 14.16)

 

The result of pious action is pure and is said to be in the mode of goodness. But action done in the mode of passion results in misery, and action performed in the mode of ignorance results in foolishness.

---From Bhagvad Gita as it is (by Srila Prabhupada - iskcon)