Always maintain hopefulness, especially when the going is hard.
It's always too early to quit.
Good will cannot flow toward you unless it flows from you.
Develop a tremendous faith in God and that will give you a humble yet soundly realistic faith in yourself.
Avoid arguments, but whenever a negative attitude is expressed, counter with a positive and optimistic opinion.
You become a worrier by practicing worry. You can become free of worry by practicing the opposite and stronger habit of faith. With all the strength and perseverance you can command, start practicing faith.