Paraphrasing Steve Jobs here.
There is some through to this. But in a relieving way i think.
No matter what decisions you will do, it will shape your life, you will learn, you will adapt your thinking. And if you won't live in regret you will know why you did certain things and why you didn't. So even though you can't change the past, you know why you are here. You forgive yourself for your apparently mistakes. You are here where you belong. You have certain skills and experiences and those shape you which is likely why you are doing what you are doing now or what you are setting out to do. It is now up to you what to make of it.
It is a natural process. Doesn't mean you shouldn't never think about your next step and also never "feel about" your next step. Intuition is strong and no matter how you will decide, you will learn and the dots will connect.