Everyone decides for himself where to waste his time, and the one who spends on bitcoin has one goal to make money, as much money as possible, that's the whole point of spending time for bitcoin 
In order to acquire the benefit of our investment we need further time to spend with patience and cool mind. Price movement really bothers us but we need not to worry about the price because all we need is to worry about our position in the market. Since it is a long term investment then we should invest in low market as much as it is possible so that we may get our maximum profit in high market.