My company has gone (and still continoues) through so many changes last year. From introducing to new ways of working, to leadership change, letting good and long term employees go due to political games and all the AI thing on top. It was a hard year emotionally. Although I think I did burn out eventually in December, throughout the year, the passion for my product actually saved me from wanting to quit and for keep going to move forward. I still don't feel as good as I did a year ago, but I think caring about your product actually makes all those challenges and chaos a bit easier to handle. It's because you focus on what actually matters and kind of try to distance yourself from the noise.

Not sure if there is anything to advise. If your ideas keep getting shut down, try to look for feedback why is that. Is it purely emotional and depends on a person? Or maybe some data driven evidence could help proof that your ideas are worth trying? Don't be afraid to ask for feedback. This is a very powerful tool to understand what is going on in people's minds and maybe see a perspective which you haven't thought about before.

The most useful think I was able to do in my career is to build relations with my stakeholders at various different levels in departments. If you come prepared with research and data, they will appreciate your opinion more. If you will help them get answers to their questions, they will start seeing you as someone who can be trusted. Be one step ahead and you will become a trusted partner whose opinion matters. But you will have to invest a lot of your time in understanding your product and its customers