I started gambling at about the age of 18 in the pub on the slots, then probably about a year on I discovered the bookies where I'd bet on horse racing and sometime the dogs.
I came home one day from the bookies with a huge grin on my face a hand full of folding money and placed it on the table, I remember my Dad saying "There's only one winner when it comes to gambling". And I didn't quite understand why he said it as I'd just won and was showing him the cash. So that didn't ring true in my mind and it was at this point I was on some kind of personal mission to prove him wrong.
Then I found that internet betting was much more convenient.
Spent too much in the American horse racing chasing that colossal win which the gambler never gets. Built up some debt, felt sick upon realizing how much I'd spent and how quickly it got out of hand in less than 2 hours 7k in the hole, luckily over time I managed to pay that off. Took a break for over 5 years. In that time I really took a long hard look at my gambling and if I'd return look at limiting losses in any game play and set up hurdles to help prevent any degenerate gambling and the tilt factor.
At the age of about 27 I looked into horse racing and created a google blog. Some horses like to run on certain type of ground hence the name GROUND is KEY I did pretty well watching lots of races and making notes prior to picking out the winners but this was time consuming. Over time I'd gamble less and less.
In around 2013 I found myself watching a few gamblers on twitch that played roulette and I was hooked. I looked at how they played and I would always try to guess where the ball would land and often I'd be much closer or even hit.
I think about a year or so on I was collating a ton of spin data from a number of casinos and tables then did a bit of number crunching, created a game play that peaked my interest with the values of return and I was comfortable with any losses.
Was able to develop it into an html app (primarily for my own use, originally not to share, but was interested in seeing how popular it was and made it live and public for all to use) and have been making profit from using it and been making a few tweaks to it ever since.
You'll find I'll nearly always have some kind of project on the go.