Someone else

If, as our proverb puts it, “Charity begins at home,” so should criticism; and criticism concerning character had better stop there. There is so much dirty linen in our own house needing to be washed that none of us need to take in our neighbour’s washing. “Mind your own business,” is a command that might have been spoken by Solomon himself, and the apostle Paul was inspired to write to the Thessalonians, “Study to be quiet, and to do your own business;” and he and Peter very sternly condemned those who were “busybodies in other men’s matters. Charles Spurgeon

It seems like in todays world everybody is worried about what everyone else is doing. It is easy to find something wrong with others but when it comes to ourselves we can't find anything wrong. We should first be concerned with our own home before trying to correct others.
What should concern us the most about others is their walk with Christ. It should be what burdens us the most about people. Where they will spend eternity should be our main concern. If you look at people like that, even your enemy, your attitude will change towards all man.
Remember, a slip of the tongue can last a second, but it may take years for someone to get over.