Learn to say Noโand to be rude about it when necessary. Otherwise you will not have time to carry out your duty, or to do your own work, and certainly no time for love and happiness. The termites will nibble away your life and leave none of it for you.
Robert A. HeinleinMy dear, I used to think I was serving humanity . . . and I pleasured in the thought. Then I discovered that humanity does not want to be served; on the contrary it resents any attempt to serve it. So now I do what pleases myself.
Robert A. Heinlein