For now, here are the first two things he wrote about back in March. They are worth posting not because they are profound but becasue they are simple without being simplistic. So here's John Piper's first two lessons from his Dad. Enjoy.
1. The right road always leads to the right place; therefore, get on the right road and go as far as you can on it.
"My father was totally persuaded that wrong means do not lead to right ends. Or, more positively, he was persuaded that living in the right way--that is, doing the right things--are means that inevitably lead to where God wants us to be. This is why he told me, when I asked about God's leading in my life, 'Son, keep the room clean where you are, and in God's time, the door to the next room will open.'"
2. There is only one thing to do about anything; that is the right thing. Do right.
"This is what one might say to a person perplexed by a difficult situation whose outcome is unknown. The person might say, 'I just don't know what to do about this.' It is not useless to be told; Do the right thing. That may not tell you exactly which good thing to do, but it does clear the air and rule out a few dozen bad ideas."