Visit your old school as an alum and everything looks smaller. So do the problems you had there.

Rooms do not shrink; your scale changes. The corridor that felt endless is thirty paces, the teacher you dreaded is a tired adult doing a job, the thing everybody was going to remember forever has been forgotten. What was large then was large relative to you then, and you have grown past the measurement.

Think about whatever feels enormous right now and borrow that view early. Ask how much of it will still be heavy in three years. Then spend your worry on the part that passes the question and let the rest go.