So think about why it was naive and iterate/pivot to not be naive. Having ideas shot down is part of the process. Just like an actor being told no for more often than yes. Those that can't take rejection don't fare well. But being told no isn't a person slight to be taken as don't ever offer suggestions again. It's just that suggestion isn't the one. If you work for someone that does mean never again, work some where else as soon as possible. Some ideas are just bad for the purpose. Some just need more work.