What was the best lesson you ever learned and how did you learn it?

Not to waste time with things ,projects,or people I don't really want to or care about.AND TO BE TRUE TO MYSELF ...always I learned because I thought I was true to myself but I wasn't I trusted too much in others to look after my best interests people don't do that , I learned first hand through life,and the fact that we can't go back and redo it ,so it is a lesson thats done me no good to learn from unless I can let someone else like you know what it can do BEFORE it is too late in life.

Never to mix laxatives with sleeping pills.

I'm not going to tell you the lesson I learned from doing that.....You'll have to use your Imagination.

Life is short, enjoy it. Learned it after experiencing the death of a loved one.

save money. Learned it seeing so many old people broke.

i've not learned any

Don't get drunk no matter how nervous you are. ~ the hard way

dont touch something hot