Someone has said that in our day, Christianity is like a great football game in which there are 22 people on the field greatly in need of rest, and 50,000 in the grandstands greatly in need of exercise. According to Michael J. Christensen, in The Samaritan's Imperative , Mother Teresa started her first orphanage in Calcutta when she was just an ordinary nun with little more than an extraordinary dream. Sister Teresa became Mother Teresa with practice, practice, and more practice of that extraordinary faith. But watch yourself, or you also may be tempted. The meaning of the second sentence is clear.
Many people enjoy it so much that if there is no delicious gossip available, they'll invent some.
Paul is referring to an unexpected discovery, rather than something uncovered by a snoop. He warns the Galatians not to be interested in taking pleasure in others' pain, but to be intent on giving aid and comfort. Life in the spirit means giving, not taking. Comparing ourselves to others has no good result. We either become prideful or ashamed.