An idea becomes serious once inconvenience stops changing the schedule.

Anything genuinely serious to you survives inconvenient weeks. A commitment that gets dropped whenever something else comes up is a preference, and the pattern of what you cancel is a more accurate account of your priorities than any statement about them.

Look at what you rescheduled in the last month. If the important thing was among it, decide whether to protect it properly or to admit it is not currently a priority. Both are honest.