YES!

There are so many things in life that get us down and want us to not believe in ourselves, but I found this address given by Steven Colbert to a graduating class and I thought, if we did this many of us would be much happier at the end of our lives.  So I hope you enjoy this!
"Say 'yes.' In fact, say 'yes' as often as you can…. You are about to start the greatest improvisation of all. With no script. No idea what’s going to happen, often with people and places you have never seen before. And you are not in control. So say 'yes.' And if you’re lucky, you’ll find people who will say 'yes' back. Now will saying 'yes' get you in trouble at times? Will saying 'yes' lead you to doing some foolish things? Yes it will. But don’t be afraid to be a fool. Remember, you cannot be both young and wise. Young people who pretend to be wise to the ways of the world are mostly just cynics. Cynicism masquerades as wisdom, but it is the farthest thing from it. Because cynics don’t learn anything. Because cynicism is a self-imposed blindness, a rejection of the world because we are afraid it will hurt us or disappoint us. Cynics always say no. But saying 'yes' begins things. Saying 'yes' is how things grow. Saying 'yes' leads to knowledge. 'Yes' is for young people. So for as long as you have the strength to, say 'yes.'" – Stephen Colbert, Knox College Commencement Address