Maybe you're not going to conquer the world right away. Put it in perspective.
You got used to winning in M-20 last year and now you've moved up. Running in elite is not easy by any measure. There are loads of new challenges that you're coming across. Focus on overcoming them one at a time and soon you'll be far past them and onto new struggles.
You're doing quite well. Remember that the higher you go, the harder it is to win. Look for other victories to celebrate on your way up: a solid section of a race, a good period of training, finishing well in a race.
This is a mental game in a physical arena at the end of the day. So follow Thierry's example and smile. Enjoy the journey. If you don't, it won't be worth it. But also remember what Luisma loves to say: "Always fighting."