A dream becomes serious when sacrifice stops surprising you.

As long as each cost still shocks you, you are treating the dream as something that should arrive without a bill. Serious commitment shows up as a change in expectation, where the early mornings, the declined invitations, and the slow years stop feeling like unfair surprises and start feeling like the terms.

Write out what this actually costs, honestly, before you commit further. Then decide with your eyes open. Deciding once, with the price visible, is far easier than renegotiating it every time it comes due.