Signs of getting old

It is getting more difficult to scratch my back. Afraid to start on any new topic since I am not be able to put the hard yakka to get anywhere with it. Scholars who have spent lifetimes on spcialized topics seem to have their own prejudices and so end up reading easy stuff on the internet which does not even scratch the surface. But there sre other things ons can do like babysitting for grandchildren helping those with stronger passions. In Australia one can even make money from the government by such activities. But one's Indian background seems to preclude taking advantage of such facilities.