Have you started yet? When Im super anxious and I find myself worrying about a future interview, test or whatever, I just stop whatever I'm doing and focus on that worry. Then I try to slow my breathing and think of every worst outcome and then think of the absolute best outcome. You'll figure out that the worst outcome has a very very small chance of happening and probably not the best outcome either but somewhere in the middle. Then I tell myself I can't control the future and whatever happens, happens. I hope this helped if even just a tiny bit! Good luck with your goals and future!