Being selfless and being unattached do have a genuine relationship: If you are too attached to how others feel, you are usually also allowing yourself to descend to their level of frequency, into the negative energies they are feeling. This effectively limits what help you can give them.
And quite often it is in alignment that you help. For me, this means avoiding mass charities, because it has been proven over and over again that only a fraction of the money collected actually goes to the people it is supposed to benefit. I prefer a few direct relationships to benefit, once I am convinced that they are genuine and truthful. And that means there is only one man in the middle, like PAyPal, that only takes a modest transport fee!