If you judge anyone TOO HARSHLY then you will make things HARDER FOR THEM.
If you judge yourself TOO HARSHLY then you will make yourself TOO STRESSED to TRY IT AGAIN so that YOU CAN DO IT BETTER.
If you JUDGE your FRIENDS TOO HARSHLY then you might make them CHOOSE TO IGNORE YOU because they DON'T DESERVE TO BE TREATED SO HARSHLY.
When you want TO TEACH someone the BEST WAY TO DO IT then YOU SHOULD POLITELY EXPLAIN the REASONS WHY something SHOULD BE DONE DIFFERENTLY so THEY WILL UNDERSTAND.
But if YOU JUDGE THEM TOO HARSHLY then THEY WON'T LEARN ANYTHING except that the WAY YOU MAKE THEM FEEL IS UNCOMFORTABLE.
You may not UNDERSTAND just HOW HARSHLY YOUR JUDGEMENTS CAN BE so TAKE A MOMENT TO THINK BEFORE YOU SAY IT so that YOU ARE NOT SAYING ANYTHING TO YOURSELF OR ANYONE that is TOO PAINFUL TO HEAR.