A piece of advice I'll always remember

 While considering this topic from Long and Short Reviews I came up with an answer quite unexpectedly. It was something said to me when I was a teenager and I've said it to other people since, even though for the life of me I can't remember where I heard it from.

The last time I said it, in fact, was when my husband made a comment about how all my ex-boyfriends were weird. (Which is true enough - my husband is the only man my father ever liked. He definitely thought all my exes were weird.) He was wondering, in that way of his, how I had managed to land a man such as himself when I apparently had such strange taste in men.

My response? "You've got to kiss a few frogs before you find your prince."

I can remember being cheered by this after breaking up with my second ex back in sixth form, since it amused me to think of him as just another frog. And it was decent advice, too, although luckily I didn't have to kiss many more frogs before I met my prince.

So what piece of advice will you always remember?