I want to do too many things and I feel anxious


I feel anxious all day long. I always have had this sensation in my stomach (like the one you feel when you are on a roller coaster) without being able to relate it to anything in particular.
During one thought download, I realised that one part of the problem might be that I’m interested in so many things, and want so many things to be done that I don’t actually enjoy what I’m doing and always think about what I am going to do next.

I tried to make a model.
I didn’t put any circumstance. It changes everyday.

T: I’m not sure I’ll have time to do everything I want to
F: tensed, anxious
A: I hurry up. I do a little of everything, already thinking about the next thing that has to be done (or the next thing I want to do)
R: I don’t really enjoy anything

Is the model correct? How can I deal with this?
Thank you