Why am I always anxious? How to get rid of this thought?

I am 21 (F). I live in other country alone. I study and work. Whenever I go back home. I get weird anxiety. I can't sleep at night. I get millions of thoughts running in my mind making me restless. I love my parents a lot. I love my younger brother like he is very young. He is always so happy to see me and... show more I am 21 (F). I live in other country alone. I study and work. Whenever I go back home. I get weird anxiety. I can't sleep at night. I get millions of thoughts running in my mind making me restless. I love my parents a lot. I love my younger brother like he is very young. He is always so happy to see me and waits for me to come. Now the problem is they all love me so much, my parents can do anything for me. My dad always say not to go and live with them. I am doing this for a better future. This is what my parents want too. But when they get emotional they ask me to stay. At night, I usually think what will I do if God forbid I lose them. I will probably go crazy. This thought never let me sleep. Please suggest how should I enjoy the present and forget about future.
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