A bit o' sage advice

For the last few months, I've been collecting quotes and bits of advice and posting them on my bulletin board where I can see them, hoping that, just maybe, some of the wisdom in the quotes will filter down into my poor brain. The jury's still out on the effectiveness of this tactic, but in the meantime, I thought I'd post some of these bits of sage advice here in case they're of use to anyone else.

I don't have an attribution for this particular bit o' sage, so if anyone knows of the...