1. Read about it. Take a passage or a story from Scripture that pertains to your issue or concern. For example, a person concerned about criticizing others may want to read Matthew 5:1-7, "Do not judge, so that you may not be judged."
2. Talk to yourself about the issue of concern. You probably do this very often. We all do. We mull things over, even sometimes talking aloud to ourselves.
3. Talk to God about it. This is the part that makes meditation more than positive thinking and self-motivation. This is the part that makes meditation prayer. If you could be kinder on your own - without Jesus' help - you would be. Jesus tells all of us, "Apart from me you can do nothing" (John 15:5). Talk to Jesus out of your feelings. Hear him talk to you. Always, always, tell him you love him and know he loves you.
4. Do something about it. Make a resolution. Choose one small step you can take, and pray to keep it.