What I know is is that if you do work that you love and the work fulfills you the rest will come.
One of the great attractions of patriotism - it fulfills our worst wishes. In the person of our nation we are able vicariously to bully and cheat. Bully and cheat what's more with a feeling that we are profoundly virtuous.
If I have my health I can carry on. There will be a point when I do quit but I have absolutely no idea when that is.