I get it, we all want credit for how we've helped others reach a certain level, but as I've gotten older, I've learned that not everyone will give you credit for helping them shine, and that's fine. You know they wouldn't be where they are if it wasn't for your help, so charge it to the game and move on. I'm a different breed because I've never cared about getting credit for helping someone come up. Watching the recipient shine is credit enough for me, especially if me & that person have history together.
