There is a well known Hasidic tale of Reb Zusya, a rabbi of great wisdom, compassion and humility who, after his death, anxiously awaits his meeting with God.
His greatest fear is that he never became as great as Moses, Solomon or the other exalted Rabbis or prophets.
When finally before his Creator, the omniscient One says—"What troubles you my son?" "I feel I have not lived up to your expectations." Reb Zusya replies, "I have not become another Moses. "
"Don't be foolish, my son." God replies, " I only wanted you to be Zusya."
The lesson here is clear.
In this incarnation we need only to be ourselves, the best possible version.