My philosophy -since the selfishness people are capable of can be overwhelming stick to this and you'll never be at their level...
Why go to Confession: it teaches us to TRULY be kind-- to be a merciful lover of the Truth, which can only happen if we are humble enough to receive the gift of God's forgiveness and mercy so that we can pass it on to others. There are all sorts of ways in which being "nice" is not kind at all, because it enables untruth and judgment when it excuses itself from what's truly right and just: anyone who has ever fallen afoul of a clique knows this.
I've always said something like this. So many people can't wait for every weekend to get here. Do they not realize they are wishing each week of their lives to go by quickly and be meaningless thanks. Although some days suck, I still give thanks for them to go slowly.