Jhonsy's initial certainty about dying:
Jhonsy, the young artist, was suffering from pneumonia and her condition was deteriorating. She had lost all hope of survival and believed that she would die. She was convinced that she would not recover from her illness and had already made up her mind that she was going to die.

What made Jhonsy change her mind about dying?
Jhonsy's change of heart was brought about by the sight of a leafless vine outside her window. She had been watching it for days and had seen it lose all its leaves due to the strong winds that had been blowing. She believed that when the last leaf fell, she too would die.

One night, her friend, Sue, who was also an artist, came to visit her. Sue was determined to help Jhonsy regain her will to live. She noticed Jhonsy's fixation on the vine and decided to use it as a way to bring hope back to her.

Sue made a plan with the help of her old friend, Behrman, who was a struggling but talented artist. Behrman painted a leaf on the vine outside Jhonsy's window, giving her hope that the leaves would grow back and that she too would recover.

When Jhonsy saw the painted leaf, she was filled with hope and began to fight for her life. She realized that she had been wrong in believing that she was going to die and that there was still hope for her. Jhonsy's will to live was restored, and she eventually recovered from her illness.

Conclusion:
Jhonsy's change of mind about dying was brought about by the sight of a painted leaf on the vine outside her window. It gave her hope and the will to live. The story teaches us that hope is a powerful force that can help us overcome even the most difficult situations. It also highlights the importance of friendship and the support of loved ones in times of adversity.