Here's Galatians 6:4 in simple words:

Don't compare yourself to others. Instead, look at your own life and actions.

The verse is saying:

1. Check yourself – Look at what you are doing, not what everyone else is doing.
2. Don't compare – Stop measuring yourself against other people. Their journey is not yours.
3. Be proud of your own work – If you're doing your best, you can feel good about that — without needing to be "better" than someone else.

In short:
Focus on your own progress, not on beating others. Your worth isn't measured by how you compare to someone else.