I can't agree less with you @anacristinasilva. The problems and struggles we face on a daily basis are enough burden to shoulder - adding anyone's problem to yours definitely won't life easy for us.
But at the same time, there are people you can't help but shoulder their problems - people like family.
At the same time some people can't say no when being beckoned on by others in times of trouble - but I would say, do the ones you can and leave out the ones you can't.