Answer in Details
If you lose an opportunity you hold dear, remember Shiva's lesson: all things in the material world are temporary and subject to change. Clinging to outcomes causes suffering. Instead, practice surrender (Ishvara pranidhana)—offer your actions and their results to Shiva, trusting that whatever happens is for your highest good.
Shiva teaches us to maintain equanimity in both success and failure. Reflect, learn from the experience, and let go of regret. Focus on your inner growth, devotion, and the present moment. As Lord Shiva shows through his own life, true fulfillment comes not from external achievements, but from inner peace and spiritual realization.