Whenever you do something new or out of your comfort zone the feelings that you go through and experience can make you doubt your decision.
Instead knowing that being uncomfortable is ok when you have made changes in your life. enjoy these feelings, they show that you are out of your comfort zone – and that means you’re growing! If you stayed in your comfort zone you would never experience much, you would only be living a mundane life, instead taking action and making new choices ensures you’re growing and learning new and potentially exciting things!
Best of luck!