I just turned 30, my advice if you are in your 20s
If you are a male :
Don't waste your 20s chasing anything but money. All the Don Juans of my 20s that were 100% invested in their appearance and girls are now broke, balding and alone. The guys getting girls now are the ones who built an empire in their 20s.
Don't think you will be able to make money later, the game is playing now, at 30 it's over, there is less testosterone, less motivation, less social status. Being broke at 25 is socially normal, but at 30 you're seen as a loser.
Do sport. Your 30s body will thank you.
If you are a female :
Don't trust Hollywood and western media. Don't think you are going to be beautiful and fresh all your life.
Girls at 30yo are a lot less beautiful than at 22, girls that were 10/10 became random 5/10. It's the hormonal clock. You have a 15 years window starting from your 20th anniversary till you're 35.
Seeing this with my own eyes made me realize feminist ideology is bullshit and i had to reconsider my whole vision of the world (i studied in french school in morocco and feminist ideas were normal to me)
Girls at 30 become desperate for marriage and have to date 40yo guys if they want a chance.... because all the good (with money) 30s guys are dating 20yo girls.
The guys you have access to now with your beauty, you won't be able to get them in 10 years.
Honestly, if you are a girl with progressive ideas, just emigrate to Europe if you can, our society is brutal for single women over 30yo, in Europe at least you will have a good paying job.