Growth is when your idea of fun starts including things that are good for you.

Early on, the enjoyable things and the good-for-you things sit in separate columns. Then at some point a long walk, an early night or a hard session stops being a chore and turns into something you look forward to, and that shift is real rather than performed. It is not virtue. Your taste changed, because you did the thing long enough to notice how the next day felt.

Give one of those a fair run instead of a single attempt. Three weeks, not three days. Judge it on the following morning rather than on the hour itself.