Lessons - both large and small

I just started reading a book called THE HAPPINESS PROJECT by Gretchen Rubin.  I already like it.  Here's a sample of why I like it.  Her list of secrets of adulthood.

People don't notice your mistakes as much as you think.
It's okay to ask for help.
Most decisions don't require extensive research.
Do good, feel good.
It's important to be nice to everyone.
Bring a sweater.
By doing a little bit each day, you can get a lot accomplished.
Soap and water remove most stains.
Turning the computer on and off a few times often fixes a glitch.
If you can't find something, clean up.
You can choose what you do; you can't choose what you like to do.
Happiness doesn't always make you feel happy.
What you do every day matters more than what you do once in a while.
You don't have to be good at everything.
If you're not failing, you're not trying hard enough.
Over-the-counter medicines are very effective.
Don't let the perfect be the enemy of the good.
What's fun for other people may not be fun for you - and vice versa.
People actually prefer that you buy wedding gifts off their registry.
You can't profoundly change your children's natures by nagging them or signing them up for classes.
No deposit, no return.
Never start a sentence with the words "No offense."