Meghan Markle is speaking out about the challenges of advocacy. The 38-year-old Duchess of Sussex gave the keynote address during Girl Up's virtual leadership summit on Tuesday and got candid about how everyone must work together to face the challenges plaguing our country and world.«In the halls and corridors and places of power — from lawmakers to world leaders to executives — all of those people, they depend more on you than you will ever depend on them.