...to take crap lying down. Writers have been groomed to be submissive and accepting, to grovel before all-powerful publishers, editors and literary agents. You're too old for that, and now you don't have to any more.
...to listen to the people who say you can't start a company at your age, take up spear-fishing, go back to school, or write and publish a book or ten. Don't allow pessimists, naysayers and scaredy-cats to keep you from realizing your potential.
...to keep on trying to save people who don't want to be saved.
...to be in love with people who don't value, respect and love you back.
...to keep abusing your body by feeding it garbage and starving it of exercise.
...to hoard your treasures. Wear the pretty outfit; break out the special lingerie; use your good stuff.
...to keep blaming your parents for your failings in life.
...to allow people to stomp on your spirit. Excuse yourself from that conversation.
...to say yes when you mean no, and no when you mean yes. Say what you mean, and mean what you say.
...to take people for granted. Show appreciation.
...to take life for granted. Count your blessings every day, be happy you woke up, and make good use of your time.
Take a long, hard look in the mirror with all the lights on and tell me: aren't you too old for all of the above? I've discovered that attaining 'a certain age' can sometimes be the most liberating experience of all.