Proverbs 21:2

So last night I got my bible out, and it opened up to proverbs, to where I already had a 3x5 card. ( I like to use them to make notes) I decided to just read from chapter 21, thinking that the Proverbs always have something applicable. I read verse two which is, "All a man's ways seem right to him, but the Lord weighs the heart". I thought to myself, does it matter how I judge things? If I judge my own actions, then to who am I accountable to? I know that we fail, but here it says that we can't even be the respective judge to ourselves. Accountability is something that we need to have, not only with the Lord, but with our fellow believers in Christ.