I've been writing on Medium for over a year (& still have my 15+-yr-old WordPress site..) Not sure I'll live long enough to be a "Success," but it's just fun reading & I love to write. Here's my only secret: I seldom read anything that's listed at over 4 minutes. (I also write fairly often on The Shortform ; 150 words max.) Probably miss a lot of good stuff, but what can I say? Thanks for this fine 2-minute piece.