Yeah, absolutely right and I agree with you, discipline is very paramount or important in gambling responsibly, a gambler without discipline will mostly end up as an addict and this will completely ruin his or her life...
Strategy in gambling is more of we knowing our limit capacity and putting ourselves in control, this helps us know how much we can afford to lose and make sure we are not risking anything more than that, gambling is fun and very enjoyable if and when we do it with the right mindset and apply all the necessary precautions that ensure we have ourselves under control.
As I have repeatedly said self-control helps to lose less in gambling but at the same time limits the gambler in emotional terms. Risks are directly related to the emotions received during the gambling session and this each of us can check for themselves. Therefore, I believe that every gambler must decide for himself what is more important to him in gambling money or emotions. Personally, I try to stick to the middle, but sometimes I still go to all the trouble.