I'm a newbie and have been into crypto for a couple of months now. I must say the advice from other members about not checking trades too often is very good. One can become obsessed with it, and I think the thrill of the "win" can be quite addictive. Similarly that depressed feeling when the world is "red" can be deflating as well. There must be a "happy" medium, if one is to maintain a balanced life.
Monitoring the price of the coins every time is not called addiction. You are just taking advantage on how the market works. Most of the people here just want an easy money because cryptocurrency is volatile and wants to sell when the price rise or dip tremendously. But if you are really a daily trader, you should monitor it carefully. Because in any moment you can earn by a slight dip or slight rise in value. You can buy cheap coins and sell it in a good price. If you are just a holder then I think checking it seldom will work but not as a daily trader.