Preparation clears a pathway for success.
There's no such thing as the very best. If you're doing your best, it's only because you haven't yet found a way to do better.
When a customer asks what no one else has ever asked, pay close attention.
A scattered effort is a poor effort.
If it's not impossible, you may as well try. If it is impossible, at least you'll find out why.
Words not kept break more than a promise.