Winning is all that matters to so many gamblers and when they are not winning, it makes them start to gamble with emotions so that they can make sure they win back all they lost, but they forget that while gambling, they don't get to choose when they win or lose. Like you said, no body is happy for losing but regardless it's not wise to start chasing losses, when a gambler doesn't win after wagering some money many times, best choice is to take a brake for the main time.
Once a gambler begins to focus on making money from gambling, it leads to addiction and trying new possibilities just to make sure they continuously take profits. A responsible gambler will forfeit the benefit of constant profits, enjoy the fun, and be able to bear the losses whenever the bets fail. We generally look happy when we win, but at what expense?
This advise can not be for me because before going to gamble the plan is to make profit because that's the aim of gambling for me, sometimes I am lucky to win and sometimes losses is all I get but that doesn't stop me from thinking about making profits more than losses in gambling. Addiction in gambling is not caused by placing profit in front rather I think addicted gamblers are those greedy gamblers who has no limits to what they do even when they are losing.