Well yeah.. you can just keep plugging away, so each person is going to have differing goals.. and so maybe since you have been in bitcoin longer, you might have had been able to accumulate more bitcoin than some others who are brand new to bitcoin, and some guys might consider that they would like to get to 2 BTC in the next 10 years.. and so along the way they might have several targets, such as first reaching 1 million satoshis.. then reaching 21 million, then reaching 50 million.. and then 1 BTC.. and then 1.5 BTC and etc, etc. etc...
I want to stay in the circle of investing in Bitcoin and to be honest I haven't used Bitcoin since (eg 2013). I started in 2016 and from 2017 until now, even at that time there was no strong initiative for me to withhold in the long term because I still had minimal knowledge about Bitcoin. (meaning I only bought Bitcoin and sold again when I made a profit, but the results were zero big because the money was used up in vain because of other things. But after I followed a lot of developments in the Bitcoin discussion, I kind of want to holding it for a long time and buying gradually using the DCA method. Various targets might be included in my investment planning, such as 1 BTC a year if it is achieved or 0.5 BTC per year. Planning like that is good enough to implement because with this target we can be confident and full of enthusiasm to be able to achieve it earlier with the aggressive level that we can do.
so like you mentioned, there could be times in your life where you end up getting some extra cash come your way.. such as $2k that you did not expect, and maybe you decide you are going to use $1,200 to buy bitcoin and then you have some other personal plans for the other $800.. but your level of aggressiveness and consistency can pay off, and if you clearly consider yourself in an accumulation phase, then you should not be wanting to engage in behaviors that might be screwing up your plan.. but you also don't want to act so aggressively that you have not adequately planned various expenses in your life.
Of course, every time you work, you will definitely get additional money given by company management if a company gets bigger profits every year, so we as employees might get a bonus which we can maximize to buy BTC.
Another thing with bitcoin price dynamics, the longer that you are in bitcoin, and if you are able to exercise prudent and reasonable practices, then you can surely engage in practices of buying on the dip or even shaving off a little bit of bitcoin at various points in which the BTC price rips UPwardly a lot.. and sure the BTC price might not correct back down, but if you figure out how to sell small amounts of BTC, then you should not necessarily be concerned if you ended up being correct or not about anticipating a correction.. and surely it is not easy to get ahead of the BTC price and that is frequently why some guys will refuse to sell any BTC at all while they are in their accumulation phase until they get to a certain level of profits and also a certain level of accumulation... so sometimes any sales of BTC will end up falling into a category of spend and replace within a fairly short period of time.
The opportunity to buy wisely, of course, when prices fall. Yes, sometimes the moment is missed for us because we don't have the funds available to buy at a sudden drop in price. At the same time we only make purchases according to the planning in the Strategy stage that we do with DCA. In fact, of course it makes sense if we make a trade that buys when the price goes down and takes profit when the price goes up, but this pattern is only to be played for the short term, not the long term. Like what you have done where you have held BTC from 2013 until now.