Buy Hungry Jack mashed potato mix. Keeps in the pantry for up to a year.
If you over-salt a dish while you are cooking, that's too bad. Please recite with me the real woman's motto: 'I made it, you will eat it and I don't care how bad it tastes!'
If you have a problem opening jars, try using latex dish washing gloves. They give a non-slip grip that makes opening jars easy.
Go ask that very cute neighbor if he can open it for you.
I've always loved Maxine's advice.