From The Secret Daily Teachings:
Criticism can be very subtle in the way it creeps into our thoughts. Here are some examples of criticism to help you become aware of its subtlety, so you can eliminate it from your thoughts:
The weather is awful today.
The traffic is terrible.
The service is really bad.
Oh no, look at the line.
He/she is always late.
How long do we have to wait for our order?
That motorist is a lunatic.
It's so hot in here.
I've been on hold for so long!
These are subtle things, but the law of attraction is listening to them all. You have the ability to appreciate something in every single circumstance. There is always something to be grateful for.