scared of the future

i quit my job today, I'm a bit anxious about finding a new job but I have a good amount of time to find another one.

my relationship is going really well but I'm scared something will happen, I love her so much.

I'm scared she'll lose interest in me or she'll get hurt or sick and die or something.

 my schooling is going ok, straight Cs which isn't failing

even though things are getting better i can't shake this feeling of sadness and anxiety.