A wow jar is a place to record moments of joy, gratitude, and achievement. When you're having trouble, read messages you wrote at your best.
Step 1: Get a jar. Cut a slot in the lid.
Step 2: When you experience something great, write it down on a scrap of paper.
Step 3: Fold the paper and put it in the jar.
Step 4: Repeat.
Step 5: When you're feeling down, open the jar and read through the things you've written.
The "jar" doesn't have to be physical. I use a wow text file to keep track of things that bring me joy.
Keep paper and pen near your jar for easy recording.
Carry a pocket notebook and pen to capture moments away from your jar.