I see AI being very useful in assembling information, analyzing data, and performing calculations. In the way that being able to search the internet opened us up to immediate access to all the world's information, AI will be able to aggregate that information and communicate it in usable ways. But I see, at least hopefully, we leave the decision making to humans. Let AI provide the information and provide suggestions or recommendations, let it be a tool to make humans more capable and productive. My concern with that is it will breed laziness and dependence, the computer said it so it must be true. But I think humans possess better insight and discretion.
Manual labor is a different area. Robotics are advancing to do things humans can do, sure. But there will be times when it's cheaper to let humans do it. And overall I think we'll see robots working alongside humans, where the human can tell the robot what to do and the robot can do the things that are hazardous or require more precision or dexterity or strength or endurance or handling harsh elements. There's a huge leap between being able to do physical tasks and thinking, planning, troubleshooting, and making decisions.
To the original OP, if we're talking about early careers for school age kids today, we need to try to forecast where things will be in 10-30 years. Yes, AI and robotics will make some jobs obsolete (I wouldn't tell any kids to get into driving semis) and it will reduce the headcount in other areas. But it will also create new jobs that don't exist. And overall, again I think at least for the next couple of generations AI and robotics will work alongside humans and make humans more productive and capable. So how do we prepare our kids to be the ones smart enough and capable enough to still add value in that process? Memorizing facts isn't useful any more. Critical thinking, logic, and problem solving are. Now, more than ever, we need to make sure our kids are learning HOW to think more than WHAT to think.