What are some tips and tricks you've learned that make life easier--anything from gardening to cooking to household tricks to home remedies to life and relationship advice?

Don't judge, but I've learned the easiest way to get yellow cigarette stains off my fingers--these stains are so hard to come off, but all I did was get a little sponge and gently rubbed the scrubby side on my fingers, and within seconds those hideous stains that refused to come off are completely gone!