Psalm 1: What does this mean for us?

If we look at the beginning it starts with "1 Blessed are those who do not walk in step with the wicked." So right away it talks about the blessings we will receive, if we choose to surrender ourselves from our lives of sin and walk in alignment in the way the Father desires of us.

So the promise for us, as believers, is that as long as we walk in step with Him we will prosper.

So seek righteousness. 

"6 For the Lord watches over the way of the righteous; but the way of the wicked will be destroyed."