What I learned ...
(Jeremiah 2) You must stand firm in your Faith for the Lord or else you will lose his fellowship. Stand by the Lord and no one else!
(James 3) We must watch what we say. It is too easy to curse against men - but that is sin. Confess all sins, but try and keep from sinning at the same time. Allow the Lord to work through you. Allow Him to guide your words and thoughts.
If we bless the Lord with our tongue, the praise is the fruit of our mouths. Do not let a curse be shed for that is a second fruit and a tree can only bear one kind of fruit.