Gambling is not a do all die affair, it doesn't lies on how professional that you are but how lucky it fall that day, it is more better having it slow and steady than going aggressively without and positive outcome.
That could also be wrong because you don’t emphasize enough the weight of being a professional. Luck is something we can’t control, but professionals are different as they believe in themselves because they actually have the skills to be profitable in gambling. So in that sense, if we’re being objective, we should be talking about real strategy, not just giving advice on how to minimize gambling or assuming it’s all about luck.