This is a mistake a lot of us make. If you track btc every minute you are more prone to panic selling. Btc has a lot of ups and downs, if you are in it long term the short price has little meaning
Checking the price every minutes is stressful and of course leads to rash decisions and panic sells. If you are the long term with BTC then you can track it 9-10 times per day.You won't track BTC every minute if you won't have BTC. Think about it
But seriously, only the willpower could help you in this situation.