Things I've learned

1. When we tell others not to do something, make sure we ourselves are not doing the thing that we are prohibiting.
2. Do not even think about changing people to be like yourselves. Respect their differences. Only react when their differences affect your safety, work or sanity.
3. Children should be nurtured to think independently, freely and openly. Parenting means guiding the child to bringing out their full potential; not guiding the child to become mirror images of their parents. 
4. Keep your ideals and beliefs true. Never sell them away for material or worldly benefits.
5. Be direct and firm in communication. Being diplomatic has its limits.
6. Keeping hierarchies has its limit. Old people should discuss new ideas with young ones instead of just shutting down new input.
7. If people do you wrong, be firm, set your boundaries, and forgive them. If things still don't work out, they don't deserve you. Just bail out.