That's true, success stories are shared much than the losing history. Whether we are into gambling or we try to follow any of the gambler, it is our responsibility to have prior plans as well as set our limits. The same luck of the one who has succeeded out of gambling won't be with us, so we are supposed to have our own strategies and tricks to increase the winning probabilities. Moreover the right exit strategy could get you small profit.
This is very common not only when it comes to gambling but in many other things, people have a tendency to try to hide their mistakes and losses and to show off their successes and their good decisions, I do not use social media that much but take a look at it, do you see many people admitting their mistakes and all the things they did wrong or their losses? Some do, but for the most part what you see is everyone sharing their good experiences and hiding everything else from view.
This is very true.
I think this is the main reason why most of the gamblers are losing their money, they never reevaluate and ask themselves what they did do wrong for them to failed, they never think the other side of the story. Being positive all the time is not bad, but I guess it depends on a certain situation, whether you're going to be positive or not. Gambling is a high risk, high reward indeed but not profitable for everyone.
Just like what the image says, if a certain person is good at gambling and always winning, doesn't mean the same thing will happen to you.