It makes no sense to blind yourself to a situation what is happening is happening, and ignoring it doesn’t solve anything. Just as going to the doctor and discovering you have a serious illness gives you a better chance of treating it, keeping track of bets and knowing how much you spend helps you control your limits.
Some people will not adhere to this approach. They would rather follow the ignorance is bliss attitude and then when they are going bankrupt they will have no place to go to.
Keeping track deters the bad habits from getting over and indeed is helpful for people who think they are losing it because of the gambling habits. Just seeing how much one person can save from not gambling is often enough to stop them from gambling anymore.
In the long term, it will help people to cut down their spending on gambling.