Stop buying the latest stuff every year like with phones and caring about brands where they dont matter, like clothes where I look for okay stuff that aint too expensive.
the most i ever saved was like 20k and it was because i was making more than i knew what to do with and a millionaire told me:
never buy something more than 10% of what you have saved up
example: if you have $200 saved, nothing you buy should be more than $20