1. We should not feel bad when making mistakes. They are actually useful as teachers are. We can learn a lot from them to the better.
2. When we have the intention to do something, we need to think it wisely. Try to imagine that Paradise and Hell are in front of us. This will guide us to the right path.
3. Experience is an unpaid teacher that is extremely important to us. We cannot get its teaching unless we try to do something new in our lives.
4. When we have intention to do the intention to do something concerning others, we need to think whether we ourselves like it or not if people do the same thing to us. Then, if we like it, just go on. Otherwise, don't do it.