I have a thought that aesthetics are often very practical. For example, things, spaces, and places which are aesthetically beautiful are often better for our health.
Another thought, in regards to fitness:
Some people go to the gym and lift weights and exercise and do certain exercises in order to beautify their bodies. Some people just focus on strength and power.
But the funny thing is if you are insanely strong and powerful, like ERIC KIM and the 1,000 pound atlas lift, naturally your body will become beautiful. However if you just focus on aesthetic side of bodybuilding, you often become plagued with injuries, and weaknesses. And not very strong.
Therefore, the practical advice:
Just focus on getting very very strong. Insanely strong. Demigod strong.