I voted for out of the closet, but it REALLY depends on who your friends and family are.
Some of my family are very pro-wealth and have been a huge encouragement to me on this journey. I think my parents would be, too, but when I reached the 20% savings rate, my mom started to think I was absolutely loaded, which may be true from a global perspective but would not be true from a US perspective. They made some big mistakes earlier in life, which is part of why money began to matter so much to me, but from the mainstream perspective they have otherwise been good with money, I just don't want them to feel bad or self-conscious for those mistakes, because they can't be changed now.
I have been vocal to friends on social media, but only for major milestones. At first some people spoke up to me, blah blah, how long's that going to take, it's not enough, blah blah. Some supporters, too. But as the milestones have increased, both sides have grown increasingly...quiet. Fascinating, really. But I reached a goal after which I once decided I would no longer share, because some friends will take this and try to copy it, others will continue to never believe it's possible, but I want to see lives transformed for the better, so I'm not afraid to be vocal, even if it only helps a few.
(Edit: I think it might be good to note I only speak out on facebook, and only have about 100 friends on there. I suspect if you are one of those people with 1000 friends, greater discretion may be advised :) )