According to Osho, self-confidence and perseverance do not lead to spiritual success because they arise from ego. Worldly success needs ego; spirituality reverses this. Realization comes through surrender: dropping the 'I', trusting the whole, and becoming empty and helpless. When the self disappears, space opens and the divine unfolds within.
No—trying harder and believing in yourself are ego games; in spirituality you relax the 'me,' trust life, and let grace do the work.