I hear all the time about the “magical” newsletters that DIY’ers believe will lead them to success. Very few of them ask themselves, why if said person/company is so great at picking stocks and timing the market do they run a newsletter instead of an actual fund or advisory business? And even fewer have actually studied the historical performance of said newsletter writer (e.g. https://islandora.wrlc.org/islandora/object/muislandora%3A2980).
In short, find a partner not a prognosticator.