Try to see it as a good new experience.
If it works out great if not you have a place to come back to, either way, you will learn something about yourself.
If you let me talk to you bluntly, it sounds to me like your mother will still be within reach. That's something I feel envious about. I lived with my parents all the way. I moved to the opposing side of the world in order to take life to the direction I wanted. I was optimistic that in a few years I could visit. Now it's been over six years now and I haven't been able to do even one trip back. I do miss my family, my language, my friends and my culture.
Now, I am bringing this up for perspective. This is not to invalidate your feelings. You have all the right. It is scary. You are doing something new. You will be moving for a job, but you must trust in your capabilities and your bond. Bring your best game and adapt to the new situation. It will make you stronger.