The stories of Yetzias Mitzrayim and the story of Purim both feature a reluctant hero who initially hesitates to take action but ultimately steps forward to fulfill their role in the divine plan.
In the Purim story, Queen Esther is initially hesitant to follow Mordechais instruction to approach King Achashverosh. (Since she had not been directly summoned by the king).
Similarly, with the story of Egypt, Moshe expresses doubts and hesitations about Hashems instruction for him to request that Pharaoh release the jews, questioning his own speech impediment and lack of self-assurance.
What lessons can be derived from these specific situations of initial hesitation?
(Accepting unique and original answers, as well as explanations found in sefarim - please provide any relevant sources, with proper citation.)