Yes it can be said that if a gambler can ensure proper use of his limited resources and time, he can succeed in preventing himself from becoming addicted. I agree with you if a gambler can keep a separate budget for recreational gambling he can avoid excessive losing and addiction. Besides one should not tend to choose gambling as a means of earning. You should set aside a portion of your discretionary income for gambling.
As a controller you have to rely on luck every time you place a bet and overconfidence can make you prone to losing more. So even if you are very experienced in gambling you should give priority to luck and indulge yourself in gambling by limiting your time and money allocation.
Few people who are involved in gambling can manage the amount of budget for gambling, the rest are just involved without thinking about the effects that will occur. When someone is addicted, all they think about is how to get victory and that will make them continue to gamble even though the capital is obtained through other activities. When control is lost, the gambler will be further involved in addiction and the effects can spread to other bad jobs, such as borrowing money, stealing or becoming a drug dealer. This has happened and I saw for myself how their lives became worse and they ended up being arrested and having to deal with the law.