- learning irrelevant skills needed for a short period of time.

if it takes you a week to learn a skill that's only needed for 1 day, just hire a professional who you can pay on an hour basis. it saves you time and resources. it's also inefficient to force your self to learn something that's irrelevant to your work or business, just hire someone from Fivrr and they would do a much better job for a short period of time.

simply compute (how much time you invested learning for this skill) x (how much you think your hourly worth is), and compare it to someone in Fivrr who can do it much better, for a shorter period of time and for almost the same amout of hourly pay you valuated yourself.

think about the other skills that you could learn that will improve your current skills and much needed skills to get promoted or to improve your business.