In my opinion, there is no reason to worry about what is going to happen in 10-15 years, stop focusing on them, focus on the present like, today for an example, or make plans tomorrow, everyone has such anxiety, but they need to also know that if they continue to focus on what is going to happen next then, they won't find a way out of the situation, I'm not a doctor who can say things like that, but I have never understood people who focus on something that they really shouldn't in the first place, I'm sorry that you are struggling.