I use this analogy, you plant seeds in people's minds with your ideas, the ideas grow into their heads and then they realize that it's a good idea. This happens

I use this analogy, you plant seeds in people's minds with your ideas, the ideas grow into their heads and then they realize that it's a good idea. This happens to me a lot with people that doesn't have full expertise in the problem you are trying to solve. As a suggestion try to be accountable for your ideas in an email or something like that, and when your lead revives the idea refloat your past email.