According to Osho, your growth is not only possible, it unfolds naturally when humility replaces ego. The small 'I' is a dust speck blinding you; drop it, admit 'I don't know,' and become childlike, innocent, receptive. In a loving, playful field of laughing, dancing, singing, don't stand outside; melt and allow. Then existence itself grows you.
If you stay humble, drop your ego, and enjoy life with an open, playful heart, growing up will happen by itself.