This is a mistake a lot of us make.
For some of us, this is not a mistake. You're making a mistake by assuming it is a mistake, if you ask me. If you are a HODLer, then you probably shouldn't be looking at the price every few minutes unless you are looking for an entry point to buy some more coins for your stash. If you get excited by the volatility or the mostly consistent upwards movement for years then this also can be a pretty intriguing pass-time. That being said, most of the price movement for bitcoin happens within moments and at the drop of a hat.
If you are a day-trader then you are probably checking the price a lot more often than 5-minutes, you may be buying and selling every 5-minutes. If you are just getting into bitcoin and are looking for an entirely "stable", free of volatility environment to store value then you are looking in the wrong place. If you are looking for an investment into the future of trade, interaction and information then this may be better suited for you. I'd say, let people do as they wish, because some people are neurotic about the price while others are ecstatic.
Bitcoin offers too many opportunities and too many freedoms to even put the simplest restriction on somebody such as "don't look at the price too often", because many people can capitalize on that and be better off because of it.