It’s easy to tell people how to solve their problem, as it doesn’t include the burden of actually doing the work.
The classic example would be that it’s easy to solve someone else’s weight problem. Tell them to eat a proper diet of X, get enough sleep, get to the gym X times per week, etc. Saying all these things is very easy, but overcoming the barriers to actually implement each one in a life isn’t already doing these things, is much harder.
Providing a path is much more difficult than walking the path.
I'd generalize burden to cost. Difficult problems usually have no good solution. Every option has some cost. Sometimes the cost of continuing to suffer from the problem is (or appears to be) lower than that of solving it.
The classic example would be that it’s easy to solve someone else’s weight problem. Tell them to eat a proper diet of X, get enough sleep, get to the gym X times per week, etc. Saying all these things is very easy, but overcoming the barriers to actually implement each one in a life isn’t already doing these things, is much harder.
Providing a path is much more difficult than walking the path.