Are you willing to pursue it, and is that what you want to do as your contribution to society?
What is it that you truly love to do? If we lived in a more ideal society, and no one had to worry about where to sleep, how to get their next meal, all the way up to raising a family and having a vacation, this would not be expected for free, and we know that. We should all want to contribute to society as much as we can, and that is what is meant by “from each according to his ability,” right? That statement, if you include the full quote generally given, is a knowingly massive simplification that just recognizes two guidelines: optimize for efficiency, while establishing a baseline of decency for living such that you do not ALLOW poverty.
Personally, I don't see what the problem with that is in terms of guidelines, but in the reality of our current world, people will warn you not to let your hobby become your work, because you will learn to hate your hobby. On the other hand, the best work will come from people who have been doing it for a lifetime.
One of the common rebuttals to anti-work sentiment is that no one would want to do the bad jobs. I don't think that's necessarily true. In our current system, with the current respect we have for people and jobs, I would agree. However, if you are trying to conceptualize something for a thought experiment, and the thought experiment requires some changes, it is an error to reject the validity of the experiment just because you are unwilling or unable to conceive of or accept changes.
For example, one of the complaints levied against “the left” is the destruction of the nuclear family, and “moral” stuff. Basically, they want something more like a TV fantasy version of the 50's. Maybe something like the original run of The Wonder Years. However, by reducing the financial viability of that kind of lifestyle for many Americans, some families that might have a stay-at-home dad or mom will instead have both parents working. Some families will never come to be. This is because the system we have does not address the realities of what it pretends to do. Rising tides do not float all boats here. Those in disrepair will sink.
I don't think it's contentious to say that no one should be living in poverty. If you have some reason to punish people, they can take criminal charges for something just and justified. However, if you believe no one should otherwise be living in poverty, you should believe that fully. That means genuinely doing what you are best at, for the good of not just yourself, but what provides the most value.
How many of your favorite hobbies have you discarded, and what have you always actually just loved? I'm not talking about a hobby to be good at here, I'm talking about something, anything really that can provide value in any way, that you will genuinely master, at least relative to anything else you would do. What is it that you would pour yourself into, providing value to people on a daily basis, if you didn't have to have a job otherwise? What could you do “like it was your job” for the length of a career?
Remember, you don't know what's around the corner. When I was a kid in the late 80s, I was pretty impressed by CDs. I wanted to be a game journalist when I grew up, before that was a term. It would have been “Editor” at a gaming magazine like EGM or Gamepro. I had no idea in 1990 that if I had put in practice writing, I could potentially just land a job, because the internet wasn't anything like it was now. Things are moving even faster now than they were before, too. While that means tech jobs are cool, that also means that artists can work remotely now because it's all digital. That link there goes to the website of James White, who you might know from seeing his work, but you might not know his name. His work is probably most famously displayed in Far Cry 3: Blood Dragon, but it's seen elsewhere too. I have one of his posters on my office wall.
James White is doing “From each according to his ability,” but it happens to be that he got the opportunity to do that. Still, when he's working, he's on the grind. He's making art for himself, but he's also making art according to customer requests.
So, we are back to the question. There is absolutely no condescension in it. If you believe that everyone should contribute to society to the best of their ability, what is it that you would choose to provide for society, and what would you swear your life on to improve and master, whether you wanted to or not, just because that's who you are? Some people learn to be extremely good at sharpening blades, and it's cool to think about, romantically. What would have you doing it 30 hours a week, while still contributing to society, if you didn't have to consider breakdowns from stress/anxiety/etc.?
For an example of a meaningful business that gives people meaningful work, I advise people to check out my personal favorite one, https://musu.bi/. They sell notebooks, and they hire and train people with physical and/or developmental disabilities, as well as victims of domestic violence, etc. I'm not affiliated with them in any way, but I can say they're good people. That's what it means to me when I think of meaningful labor for a manager and business owner. It's also what it means to me when I think of a job that you could master, but that might seem menial at first glance.
As far as jobs like unclogging massive pipes full of shit, pretty much this is why I believe currency still has value, and why people should be allowed to aim for more money if they want. Thing is, more money should result from SUPPLY N DEMAND BAYBEEEE YEAH right? So, what you're really supplying for those jobs is the willingness to do it. If no one is willing to do it, then the product sucks. You're selling someone 10 bucks in exchange for an hour of their time, but an hour of their time is worth different amounts to different people depending on what they're doing. Turns out, the supply of people who want to unclog massive pipes of shit is really low. The supply of people who are willing to work that job is low, so to increase the demand for that job, raise the wage. Bing bang boom you have people willing to spend the next 6 months clearing shit because believe it or not, there are plenty of workers out there who do not give a single fuck what they're doing as long as they get paid. There are industries built around going out for 6 months straight of backbreaking labor, but you get a shitload of money relative to other work, and you fuck off for a while. That's what it is to work on an oil rig. Some people do that right now just because it pays more than other stuff.
That may seem like meritocracy, but remember here, this is with a lower limit on the decency of your living, and you would only work jobs that suck because you are particularly suited for that kind of work. You don't give a fuck, just pay a little more.
Do you believe you should do what you're best at for a living, or what you enjoy? Remember also that those can be the same thing. Do you believe that you personally are willing to do that? If so, what is it? If you haven't started doing it, why not?