For anyone interested. Basically what I am talking about is compounded interest.
You can use this site to get an idea.
https://www.investor.gov/financial-t...est-calculator
Basically with a 1000$ investment with nothing else added by you at a 7% which is almost easy to do with the right portfolio
In 20 years, you will have $3,869.68
Does not seem like much. But add more per month and watch what happens