You never know what motivates you.
After a storm comes a calm.
If you think you can do it, you can.
By failing to prepare, you are preparing to fail.
The most effective way to do it, is to do it.
Do not weep do not wax indignant. Understand.
Either you run the day or the day runs you.
Things do not happen. Things are made to happen.
I can, therefore I am.
Well done is better than well said.
Sometimes they are a matter of luck the photographer could not expect or hope for them. Sometimes they are a matter of patience, waiting for an effect to be repeated that he has seen and lost or for one that he anticipates.