Do your regular things you do, eat, sleep and exercise regularly, don't focus too much on the graph, unless your a trader. Having a cool mind also help you not to stress out.
I agree with you and this advice is good for all the day trader but if you are a long-term trader, you wouldn't do this but rather you have to do something and just leave it all alone. Having a portfolio that is full of altcoins and Bitcoin is a good choice so if ever you see the price that is rising already you can easily trade them.