Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle. As with all matters of the heart, you'll know when you find it.

Steve Jobs

Try once, twice, three times and if possible try the fourth, fifth and as many times as necessary. Just don't give up in the first attempts, persistence is a friend of conquest. If you want to get where the majority doesn't, do what the majority doesn't.

Bill Gates