True, when you are not addicted, you will be able to control yourself even though you are losing.
Addiction will ruin everything, not only the money you allocated for gambling, but also the money that you are suppose to use for more important things.

Gambling addiction is one of the worse problem of a person, I read a lot of experience that some people even sold their car and house for gambling.
This impulsive gambling makes them very aggressive that they already forget to use their mind because they are solely using their emotional judgement.