The food you put into your mouth will affect how you feel. Everyone knows that.
But somehow we humans forget that thoughts do the same. They will affect our mood and at some point our actions. Good thing we have the ability to catch them and replace them. We're not slave to what cycles around in our heads.
What's been passing through your head lately? Is it helpful? If not replace it (you'll probably have to do it over and over again). This is hard work, but worth it.
Today, invite the Holy Spirit to illuminate destructive words and ideas that have been running through your head (no one graduates from this). Invite Him to show you what is true.