My Seniors >38+year old can earn ard 15K or more/month in their professions.  But as working class to earn such money is not easy.
Most importantly is how much u save.
I think avoiding heavy debt in buying/owning unnecessary items, helps in later days. [Unless you have the cash in advance]
My Senior with more than 15K/month...spent less than RM1000/month in total..
Anyway, he is still single, car Proton Wira 1.3 only, Semi-D [paid for], no entertainment -except playing MMORPG - Not a typical good example anyway.

BTW, i m few years younger...merely earning 10K....kind of difficult to have "break-thru"..doing wat i m doing now...unless...

He's gotta be the most boring guy in the whole universe. Earn 15K and not spending like a reasonable sane person.