The parallelism of this verse is presented in the negative. It focuses on being “established” and “rooted” – that is stable and secure. The first part of the verse notes that “wickedness” will not stand. Either the results of the man’s wickedness will do him in or God will simply not allow him to continue doing what he does.
On the other side, the “righteous” cannot be “uprooted.” Again, their choices set them up for long-term stability and they have God’s watch-care, too. While everyone goes through tough times, the righteous can rest in God’s promised protection.
In either case, our own decisions and lifestyles set us up to stand or fall. And, while God is not mentioned in the verse, we can be certain He is watching and will do what He knows is best in each of our lives – never enabling and always with tough love.