Update
I forgot to mention this and I think i should
When i was around 6 years old i started to trade stuff! I bought loads of goods.. Like 100 of some silly toy then sold them
This got quite serious i WAS MAKING £40 a week as a little kid. And thats alot for a little kid. buying bulk of toys then selling them at markets on the weekend
When i got a little older like 13 I started trading on ebay instead. I guess this was the peak of what I done. I got jo lots of designer sunglasses then resold them

It helped me fund my passion for music... but more so my passion at the time for just... collecting guitars :P
I then stoped when I started to get things like my exams in school and girlfriends :P
I sold alot of the guitars I spent my money on back then because I was just being silly and collecting them for the sake of it.
I STILL have loads of stuff that I spent my money on back then for me to sell! loads of expensive items that I really need to put on ebay soon so i can spend it on things to help me create value more directly. Not just trading!