You don't have to monitor the markets all of the time. Just because you don't day trade, you're no longer a trader. You're still considered as a trader if you buy and sell at any time that you want. It is when patience comes and makes it as an important attitude to cater your success through trading. Patience in a manner that you only sell when you get into profit, you don't make yourself affected by any bad news but you go according to your plan of when and how much is the price you're about to sell.
There are different type of traders which means its neither an active one or swing/long term one and youre right when it comes to definition of a trader which it doesnt
really need to be an active one for you to be considered as one.Buying and holding would already be enough.
Selling point will vary into each person because not all have the same mindset or on when he would be satisfactorily convinced for him to sell.
success can be defined that you do become profitable in spite of the losses you had committed and you do make yourself sustainable.