Fear not those who argue but those who dodge.
The only way to get the best of an argument is to avoid it.
If you can't sleep, then get up and do something instead of lying there worrying. It's the worry that gets you, not the lack of sleep.
The person who goes farthest is generally the one who is willing to do and dare. The sure-thing boat never gets far from shore.
Instead of worrying about what people say of you, why not spend time trying to accomplish something they will admire.