The concept of compound interest.
When I was a teenager I worked at a couple of jobs. They paid minimum wage but I did, in total, around 150 hours per month (I didn’t spend much time in school…).
So considering the fact that my only cost was my mobile phone bill (and keep in mind this is before the age of internet on mobile phones), I earned what was a lot of money for someone my age.
If I had been aware of that powerful concept that if I put aside what would have been a fairly small amount every month, it could turn into a much higher amount within 10–15 years, I might have done that.
So that’s what I wish I had known.
Hope that helps
Jon
