I think you should consider prioritizing medium-to-long term plans that will maximize the number of enjoyable little things you will have at the end of your lif

I think you should consider prioritizing medium-to-long term plans that will maximize the number of enjoyable little things you will have at the end of your life. And about the particular example of learning to sing, about 2 years of deliberate practice with a good teacher will get you where you want to be, so, not that big of a commitment in the grand scheme of things, I'd say.