- As soon as a problem is stated, start right away to solve it. Use simple examples.
- Keep starting from first principles, explaining again and again what you are trying to do.
- Believe that this problem can be solved and that you will enjoy working it out.
- Don't be hampered by the original problem statement. Try other problems in its neighborhood; maybe there is a better problem than yours.
- Work an hour or so on it frequently.
- Talk about it; explain it to other people.