According to Osho, feelings of unworthiness shouldn’t be fought or fixed; welcome them as blessings that signal the ego’s dissolution. Treat them as part of your meditation: go deeply into the feeling with humility and gratitude, without sadness or self-judgment. As you rejoice in it, ripeness comes by itself; then the ‘you’ disappears, and with it both worthiness and unworthiness, leaving simple egoless being.
Don’t fight feeling unworthy—notice it kindly, let it be during meditation, and over time it melts the ego until the idea of being worthy or unworthy simply falls away.