Left to myself, my thoughts naturally go to the futile thoughts. Worry about the future, focus on myself and my needs, etc. This leads me to anxiety and depression - as Paul puts it - darkened in understanding, separated from God, hard heartedness, given over to selftish desires.
I have to choose, every day to :
Put Off this old self which is corrupted by selfish desires
and
Put On the new self which is like God, righteous and Holy
I love the teaching of Paul on how to use our words : use them only to build others up.
Before speaking test yourself :
Is it true?
Is it kind (in love)?
Is it beneficial?