In trading, in order to have a constant profit, you must always follow a trading strategy. It is especially hard to close trades during growth, but the discipline makes a good trader out of a bad one.
Constant profit? I think this one is hard to achieve no matter what youre experience in crypto. You see, trading experience has bit advantage compared to those who are none, but the fact that crypto is quite volatile there are times that you will see some flaws even youre following the correct method of a day trader. I know this, cause I have experience but still I loss some bucks but very often. What I can advice is, be always careful and observant also on the major market or coins cause this affect small ones also.