以下是一些勉勵人的英文佳句：
1. "Believe in yourself and your abilities, for success is solely determined by your attitude."
2. "Opportunities are often disguised as challenges."
3. "Never give up on what you really want to do. The person who really wants to go to sea will not allow a storm to keep him on shore."
4. "Success is not final, failure is not fatal: It is the courage to continue that counts."
5. "If you aim at nothing, you will hit it every time."
6. "Life is like a box of chocolates, you never know what you're gonna get." But remember the positive ones!
7. "The best way to predict the future is to create it."
8. "Persistence is the key to success. Don't give up when things are at their worst."
9. "Nothing great was ever achieved without enthusiasm."
10. "If you want to live your life on the edge, go for it, but don't let your life slip away before you live it."
希望這些英文佳句能夠激勵和鼓舞你，讓你勇往直前，追求自己的夢想和目標。