Borrowed mottoes-
"If something bad hasn't already happened, it's about to." Thank you, Harry Reasoner.
Even older and I forget what worthy made the statements I'm going to paraphrase-
"Always have a plan"- emphasise, a PLAN, not a wish- for weather, aircraft condition and route changes. Execute it.
"When in doubt, chicken out."
"Always use the long axis of the LZ."
Checklists don't forget. Don't forget your checklist.
All checklists aren't printed.
Final shot- buy a calculator with two memories. Weight and balance is much simpler with one- and if you calculate it you'll know what's happening.