Life is what you make it. That's sex education classes out the window then!
He who hesitates is lost. He who thinks he is wiser bought a Sat Nav and still got lost. He who really is wiser thought first then got a taxi.
Ignorance is bliss until you remember you've just put your hand on the hot ring you turned off two minutes ago, then it's blisters.
Know which side your bread is buttered, not that it makes any difference if you drop it on the floor because it always lands butter-side down.
Many hands make light work. This probably explains why it needs seven electricians to re-wire a lamp. One to work out what is wrong with it, one to go to Been and Queued to get the right parts, one to ensure the electricity supply has been turned off beforehand, one to take various messages from home and also to phone said purchaser that he quoted the wrong info, one to dismantle said lamp, one to insert new parts and re-assemble said lamp, and one to check it works after being reminded by the householder that the electricity supply is still switched off.
Money doesn't grow on trees. It does if you are a joiner come cabinet-maker come wood-turner and have a 5 acre wood which has been blasted by recent storms enabling you to make a tidy profit from selling your wares at exorbitant prices.