Professional trader know the methodology of trading. Most skillful trader didn't trade with emotion they have their predetermined exist plan and have good trading plans.
There is no specific methodology while trading. the only basic method is buy low and sell high and it is the basic thing to remember and understand the market and monitor it carefully and understand the resistance level and make a stop loss for damage control if something negative happens .
It largely depends on what you are trading
But with bitcoins it is quite close to that. If you don't want to just buy, hold, and wait till the price grows (which seems to be the simplest method which can still be loosely called trading), you can use a more active approach trying to ride a wave. But it is more time consuming on the whole, and you have to watch the prices very closely since they are prone to abrupt movements, in both directions. And when the price more or less constantly rises, it may not be very effective in comparison with the first approach (i.e. simple buy and hold)