The adjective outgoing describes someone with a friendly, easy personality. Your outgoing friend might not understand how hard it is for shy people to speak in front of an audience.
If you're the only member of your outgoing family who is reserved, you might feel silent and invisible in their sociable midst. People who are outgoing are perfectly comfortable in social situations. A completely different meaning of outgoing describes someone who is departing, like an employee who will soon retire, or an outgoing club treasurer who isn't running for re-election.